A ball is kicked with an initial velocity of 10 m/s at an angle of 30°. Neglecting air resistance, what is the speed of the ball at landing?
A....
A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground, its velocity will be what?
A ball is tossed vertically upward from a height of 2 m with an initial velocity of 10 m/s. Just before the ball hits the ground, its velocity will...
Which of the following factors typically exerts the most influence on the horizontal displacement obtained by a projectile?
Which of the following factors typically exerts the most influence on the horizontal displacement obtained by a projectile?
A. projection angle
B....
When a long jump performance is analyzed, which of the following is likely to be of the most interest?
When a long jump performance is analyzed, which of the following is likely to be of the most interest?
A. the average velocity of the jumper...
What is the average velocity of a cyclist who covers 5 miles in 30 minutes?
What is the average velocity of a cyclist who covers 5 miles in 30 minutes?
A. 5 mi/hr
B. 10 mi/hr
C. 30 mi/hr
D. 60 mi/hr
Answer: B....
Which of the following statements is true regarding objects projected from the same level as they land?
Which of the following statements is true regarding objects projected from the same level as they land?
A. time up and time down are equal
B....
Which of the following affects the time that a horizontally projected object remains in the air?
Which of the following affects the time that a horizontally projected object remains in the air?
A. weight
B. mass
C. projection height
D. all...
Which of the following is an example of projectile motion?
Which of the following is an example of projectile motion?
A. a badminton shuttlecock during flight
B. a long jumper while in the air
C. both...
A ball rolling across a field with an acceleration of -0.5 m/s2 rolls 12.5 m and then comes to a stop after 8 seconds. What was the ball's initial speed?
A ball rolling across a field with an acceleration of -0.5 m/s2 rolls 12.5 m and then comes to a stop after 8 seconds. What was the ball's initial speed?
A....
If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time, what is true of the sailboat's acceleration?
If the velocity of a sailboat changes from 4 m/s to 2 m/s over a period of time, what is true of the sailboat's acceleration?
A. it is positive
B....
It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?
It takes a swimmer 1 hour to cross a lake that is 1/2 mile wide. What is true of the swimmer's acceleration?
A. it is 1/2 mi/hr
B. it is 1 mi/hr
C....
Once a projectile is airborne, it is affected by which of the following?
Once a projectile is airborne, it is affected by which of the following?
A. gravity
B. air resistance
C. release velocity
D. both A and B
E....
What factor(s) distinguishes elite sprinters from non-elite performers?
What factor(s) distinguishes elite sprinters from non-elite performers?
A. stride length
B. stride frequency
C. both A and B
D. none of the...
In a 5K road race, the finish line is also the starting line. What does 5K represent?
In a 5K road race, the finish line is also the starting line. What does 5K represent?
A. distance
B. displacement
C. speed
D. velocity
Answer: A....
Marion Jones changes her velocity from 8 m/s to 11 m/s. Gail Devers changes hers from 7 m/s to 10 m/s. Who has the higher acceleration?
Marion Jones changes her velocity from 8 m/s to 11 m/s. Gail Devers changes hers from 7 m/s to 10 m/s. Who has the higher acceleration?
A. Marion
B....
When final velocity is larger than initial velocity, the acceleration is what?
When final velocity is larger than initial velocity, the acceleration is what?
A. zero
B. negative
C. positive
D. average
Answer: C....
A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?
A runner moving at a velocity of 6 m/s increases the velocity in a 2 s time interval to a rate of 10 m/s. What is the rate of acceleration?
A....
A runner completes 1 full lap around a 400 meter track. What is her displacement?
A runner completes 1 full lap around a 400 meter track. What is her displacement?
A. 400 meters
B. 400 meters × 2p
C. zero
D. need more information
Answer: C....
Which of the following is/are scalar quantity(ies)?
Which of the following is/are scalar quantity(ies)?
A. distance
B. speed
C. displacement
D. both A and B
Answer: D. both A and...
In sport, which measure is more important or relevant?
In sport, which measure is more important or relevant?
A. distance
B. displacement
C. depends on the situation
D. none of the above are important
Answer: C....
Which of the following is not a kinematic quantity?
Which of the following is not a kinematic quantity?
A. distance
B. displacement
C. acceleration
D. force
Answer: D. for...
Linear distance traveled per unit of time describes what?
Linear distance traveled per unit of time describes what?
A. displacement
B. velocity
C. acceleration
D. speed
Answer: D. spe...
The Greek letter ? (delta) is used to represent what?
The Greek letter ? (delta) is used to represent what?
A. time
B. displacement
C. distance
D. change in
Answer: D. change ...
If velocity is constant, then acceleration is what?
If velocity is constant, then acceleration is what?
A. zero
B. constant, but not necessarily zero
C. changing
D. need more information
Answer: A....
Vector mechanics apply to which of the following?
Vector mechanics apply to which of the following?
A. displacement
B. velocity
C. speed
D. both A and B
E. all of the above
Answer: D....
Which of the following is/are characteristic(s) of muscle fatigue?
Which of the following is/are characteristic(s) of muscle fatigue?
A. reduction in muscle force
B. reduction in shortening velocity
C. prolonged...
The opposite of muscular endurance is what?
The opposite of muscular endurance is what?
A. muscular strength
B. muscular fatigability
C. muscular power
D. muscular flexibility
Answer: B....
During the first 12 weeks of resistance training, strength gains are due primarily to what?
During the first 12 weeks of resistance training, strength gains are due primarily to what?
A. improved innervation of the muscle
B. increase...
The torque of a muscle (rotary component) is greatest in what position?
The torque of a muscle (rotary component) is greatest in what position?
A. when the moment arm is longest
B. when the muscle insertion is 90°...
The amount of torque a muscle group can generate at a joint is used to measure what?
The amount of torque a muscle group can generate at a joint is used to measure what?
A. muscular power
B. muscular endurance
C. muscular strength
D....
Which of the following is true regarding the stretch-shortening cycle?
Which of the following is true regarding the stretch-shortening cycle?
A. When a muscle is stretched just prior to contraction, the resulting...
Which of the following likely contributes to the stretch-shortening cycle?
Which of the following likely contributes to the stretch-shortening cycle?
A. the series elastic component
B. muscle spindle activity
C. both...
In human skeletal muscle, force generation capability is highest in which of the following conditions?
In human skeletal muscle, force generation capability is highest in which of the following conditions?
A. muscle is at resting length
B. muscle...
The force-velocity relationship implies which of the following?
The force-velocity relationship implies which of the following?
A. It is impossible to move a heavy resistance at a fast speed.
B. It is impossible...
When the wrist is flexed, the finger flexors cannot produce as tight a fist as when the wrist is in a neutral position. This is an example of what?
When the wrist is flexed, the finger flexors cannot produce as tight a fist as when the wrist is in a neutral position. This is an example of what?
A....
Which of the following is a potential disadvantage of multijoint muscles?
Which of the following is a potential disadvantage of multijoint muscles?
A. active insufficiency
B. passive insufficiency
C. both A and B
D....
When an opposing torque at a joint is greater than the torque created by a muscle, what type of contraction occurs in that muscle?
When an opposing torque at a joint is greater than the torque created by a muscle, what type of contraction occurs in that muscle?
A. isometric
B....
Which of the following is/are characteristic of fast-twitch oxidative glycolytic fibers?
Which of the following is/are characteristic of fast-twitch oxidative glycolytic fibers?
A. Contraction speed is intermediate (faster than type...
Muscle hypertrophy in humans is primarily due to what?
Muscle hypertrophy in humans is primarily due to what?
A. increase in number of muscle fibers
B. increase in size of muscle fibers
C. both A...
A single muscle cell is called what?
A single muscle cell is called what?
A. fiber
B. neuron
C. unit
D. none of the above
Answer: A. fib...
Which behavioral property of muscle tissue is defined as "the ability to respond to a stimulus"?
Which behavioral property of muscle tissue is defined as "the ability to respond to a stimulus"?
A. elasticity
B. irritability
C. extensibility
D....
Which of the following is true regarding the parallel elastic component (PEC) of muscular elasticity?
Which of the following is true regarding the parallel elastic component (PEC) of muscular elasticity?
A. This component is provided by the muscle...
The component force which is parallel to the moving bone and acts to pull the bones together at the joint is called what?
The component force which is parallel to the moving bone and acts to pull the bones together at the joint is called what?
A. curvilinear force
B....
During the execution of a pull-up when the chin is over the bar, which force exerted by the biceps brachii is greatest at the elbow?
During the execution of a pull-up when the chin is over the bar, which force exerted by the biceps brachii is greatest at the elbow?
A. the...
Which of the following terms best describes the rate of torque production at a joint?
Which of the following terms best describes the rate of torque production at a joint?
A. mechanical work
B. muscular power
C. muscular energy output
D....
Which of the following statements represents the force-velocity relationship for muscle tissue?
Which of the following statements represents the force-velocity relationship for muscle tissue?
A. contraction is faster when the load is heavier
B....
Which of the following time periods is termed electromechanical delay?
Which of the following time periods is termed electromechanical delay?
A. the time required for conduction of the nerve impulse to the neuromuscular...
Which of the following types of strength training is particularly associated with subsequent muscular soreness?
Which of the following types of strength training is particularly associated with subsequent muscular soreness?
A. concentric
B. eccentric
C....
Which type of muscle could serve as an antagonist of a flexor?
Which type of muscle could serve as an antagonist of a flexor?
A. abductor
B. adductor
C. extensor
D. rotator
Answer: C. extens...
In which of the following activities do the biceps brachii function as antagonists?
In which of the following activities do the biceps brachii function as antagonists?
A. straightening the elbow during a push-up
B. straightening...
Which of the following types of muscle tension is commonly used as a braking mechanism to slow limb movement?
Which of the following types of muscle tension is commonly used as a braking mechanism to slow limb movement?
A. eccentric
B. isotonic
C. concentric
D....
When flexing the elbow, the biceps brachii, brachioradialis, and brachialis are the three major agonists recruited to perform this movement because all cause flexion at the elbow. However, the biceps also cause supination, an undesired movement. Therefore another muscle acting as a ________, causing ________ must be recruited to prevent the undesired motion.
When flexing the elbow, the biceps brachii, brachioradialis, and brachialis are the three major agonists recruited to perform this movement because...
During the down phase of a knee extension exercise, what role does the hamstring group play?
During the down phase of a knee extension exercise, what role does the hamstring group play?
A. agonist
B. antagonist
C. stabilizer
D. neutralizer
Answer: B....
A muscle directly involved in causing a segment to move is called what?
A muscle directly involved in causing a segment to move is called what?
A. agonist
B. antagonist
C. neutralizer
D. stabilizer
Answer: A. a...
A contraction in which there is not a change in length is called what?
A contraction in which there is not a change in length is called what?
A. dynamic
B. isometric
C. concentric
D. isokinetic
Answer: B....
During the kicking and follow-through phases of a punt, the quads are experiencing what type of contraction?
During the kicking and follow-through phases of a punt, the quads are experiencing what type of contraction?
A. concentric
B. eccentric
C. isometric
D....
What type of muscle contraction is employed by the elbow flexors when slowly lowering your backpack to your desk?
What type of muscle contraction is employed by the elbow flexors when slowly lowering your backpack to your desk?
A. concentric
B. eccentric
C....
Which of the following statements is true?
Which of the following statements is true?
A. When movement is slow, slow twitch fibers are recruited first.
B. When movement is fast, fast...
Which of the following does not characterize a pennate muscle?
Which of the following does not characterize a pennate muscle?
A. relatively strong
B. fibers parallel to long axis of muscle
C. relatively...
Which of the following statements is/are true?
Which of the following statements is/are true?
A. Pennate muscles are capable of producing more tension per unit of cross-sectional area than...
Which of the following most accurately describes a motor unit?
Which of the following most accurately describes a motor unit?
A. a single muscle fiber and a single motor neuron
B. a single motor neuron and...
The elasticity of human skeletal muscle tissue is believed to be due primarily to which of the following?
The elasticity of human skeletal muscle tissue is believed to be due primarily to which of the following?
A. the parallel elastic component
B....
Where is the series elastic component (SEC) of a muscle found?
Where is the series elastic component (SEC) of a muscle found?
A. tendons
B. ligaments
C. muscle membrane
D. all of the above
Answer: A....
Which of the following is a unique behavioral property of muscle tissue?
Which of the following is a unique behavioral property of muscle tissue?
A. ability to develop tension
B. extensibility
C. irritability
D. all of...
Which of the following is a behavioral property of muscle tissue?
Which of the following is a behavioral property of muscle tissue?
A. ability to develop tension
B. extensibility
C. irritability
D. all of the...
Describe the size that the effort arm of a muscle usually has and the advantages/disadvantages of this.
Describe the size that the effort arm of a muscle usually has and the advantages/disadvantages of this.
Answer: small effort a...
What is the quantification of the rotational effect of an eccentric force?
What is the quantification of the rotational effect of an eccentric force?
Answer: torq...
Which peak can you alter when landing from a jump, passive or active?
Which peak can you alter when landing from a jump, passive or active?
Answer: Forefoot/passive cannot be altered, active ca...
What is the difference between walking, running and landing from a jump GRF patterns?
What is the difference between walking, running and landing from a jump GRF patterns?
walking - bimodal, two peaks, first peak is passive heel, second...
Is running considered a bi-modal pattern? Explain:
Is running considered a bi-modal pattern? Explain:
Answer: No, two peaks are seen as the same phase of running. First peak is passive heel strike,...
Given the same force, how can one produce the greatest range of torque?
Given the same force, how can one produce the greatest range of torque?
Answer: maximizing the distance. fxd =...
Forces of muscle can be resolved into two components, what are they?
Forces of muscle can be resolved into two components, what are they?
Answer: perpendicular (torque) and parallel (stabilizing or dislocatin...
Describe the size that the effort arm of a muscle usually has and the advantages/disadvantages of this.
Describe the size that the effort arm of a muscle usually has and the advantages/disadvantages of this.
Answer: small effort arm, provides advantage...
Describe 1st class, 2nd class and 3rd class levers:
Describe 1st class, 2nd class and 3rd class levers:
Answer:
1st = axis between effort force and resistance force, may act with a mechanical advantage...
If the knee's biomechanical angle is positive = What does negative angle indicate?
If the knee's biomechanical angle is positive = What does negative angle indicate?
Answer: it is flexed; hyperextension since the knee angle...
What does it mean if a law of cosine angle is 180 degrees?
What does it mean if a law of cosine angle is 180 degrees?
Answer: the joint is in a neutral aligned positi...
When is a biomechanical angle 0?
When is a biomechanical angle 0?
Answer: In anatomical positi...
What is the tan hypothesis?
What is the tan hypothesis?
Answer: describes potential trigger mechanisms for preparations prior to contact in animate landing situations
...
What are the components to a jump and reach test? What is the most important one?
What are the components to a jump and reach test? What is the most important one?
Answer: takeoff height, flight height, reach height and loss...
What is the difference between calculating time in the air vs jump height in a vertical jump?
What is the difference between calculating time in the air vs jump height in a vertical jump?
Answer: vertical velocity determines jump height...
Are rotations in a segment in the clockwise direction regarded as negative or positive?
Are rotations in a segment in the clockwise direction regarded as negative or positive?
Answer: negati...
Describe angular motion.
Describe angular motion.
Answer: requires that all parts of interest move through the same angle but do not have the same linear displaceme...
What is necessary to have angular motion or acceleration?
What is necessary to have angular motion or acceleration?
Answer: centripetal accelerati...
What's the difference in the forces determining how high a person jumps vs. how high something is thrown?
What's the difference in the forces determining how high a person jumps vs. how high something is thrown?
Answer: How high a person jumps is...
Is an axis of rotation perpendicular or parallel to a plane of motion?
Is an axis of rotation perpendicular or parallel to a plane of motion?
Answer: perpendicul...
How are segment angles not reported?
How are segment angles not reported?
A. Angles are reported with respect to a moving segment
B. Angles are reported with the respect to the proximal...
How far (radians) does the elbow move from right foot strike to left foot strike?
How far (radians) does the elbow move from right foot strike to left foot strike?
Answer: .8 ra...
An object at a constant speed is under __________ motion and (kinetic or kinematic) forces.
An object at a constant speed is under __________ motion and (kinetic or kinematic) forces.
Answer: static; kinetic and kinemat...
What is the slowest shutter speed you can have to stop human movement?
What is the slowest shutter speed you can have to stop human movement?
Answer: 1/20...
30 pictures indicates a _________ advance. 60 pictures indicates a _________ advance.
30 pictures indicates a _________ advance.60 pictures indicates a _________ advance.
Answer: frame, fie...
If you wanted more depth of field, what adjustments would you make?
If you wanted more depth of field, what adjustments would you make?
Answer: larger f stop (smaller rati...
If you were experiencing a lot of light while taking a picture, what adjustment would you make?
If you were experiencing a lot of light while taking a picture, what adjustment would you make?
Answer: larger f st...
Which of the following don't belong: Kinetics examines forces, kinetics describes the movement, kinetics examines the effect of forces.
Which of the following don't belong: Kinetics examines forces, kinetics describes the movement, kinetics examines the effect of forces.
Answer: Kinetic...
What kind of lever has a mechanical disadvantage?
What kind of lever has a mechanical disadvantage?
Answer: 3rd class lev...
There are more 2nd class levers in our body than first class levers. True or false?
There are more 2nd class levers in our body than first class levers. True or false?
Answer: false; there are no 2nd class levers in the bo...
What kind of lever is a calf raise?
What kind of lever is a calf raise?
Answer: compl...
Slowing down in the negative direction is an example of _________.
Slowing down in the negative direction is an example of _________.
Answer: positive deccelerati...
Which gives an instantaneous value for acceleration? The @ method or the between method?
Which gives an instantaneous value for acceleration? The @ method or the between method?
Answer: neither, values approaching instantaneous can...
Acceleration is the ________ of the ________ - time graph.
Acceleration is the ________ of the ________ - time graph.
Answer: slope; veloci...
What is the difference between speed and velocity?
What is the difference between speed and velocity?
Answer: speed is the change in distance over time and it is a scalar quantity, velocity is...
How is change in position determined?
How is change in position determined?
Answer: (change in x ^2 / change in y ^2) ^1...
If only a number is listed regarding distance, that is called it's ___________. If that same number received a negative symbol, that would signify what?
If only a number is listed regarding distance, that is called it's ___________. If that same number received a negative symbol, that would signify what?
Answer: magnitude;...
If you are given acceleration at two separate times, how do you find the velocity between them?
If you are given acceleration at two separate times, how do you find the velocity between them?
Answer: use the trapezoid ru...
If the slope of the position time graph is negative, velocity is ____________. If velocity time graph is increasing linearly, what does this mean?
If the slope of the position time graph is negative, velocity is ____________. If velocity time graph is increasing linearly, what does this mean?
Answer: negative;...
If distance is measured then what must be specified?
If distance is measured then what must be specified?
Answer: magnitu...
Kinetics is the study of the effects of force. T or F?
Kinetics is the study of the effects of force. T or F?
Answer: ...
Why is kinetics important?
Why is kinetics important?
Answer: It helps to identify why injuries occur and how to prevent them and it helps direct conditioning, training...
Does kinetics describe a movement?
Does kinetics describe a movement?
Answer: ...
How do you find a segment angle?
How do you find a segment angle?
Answer: tan ^-1 (yp-yd)/(xp-x...
How do you find out the law of cosine angle of the hip, ankle and knee?
How do you find out the law of cosine angle of the hip, ankle and knee?
1) Use sqrt ((Xp-Xd)^2+(Yp-Yd)^2) to find each side of the angle you are looking...
What is the vertical velocity at peak jump height?
What is the vertical velocity at peak jump height?
Answer: ...
When solving for jump height, what do you use?
When solving for jump height, what do you use?
Answer: vertical veloci...
If you are given the resultant velocity and angle of a jump, how do you calculate max height jumped?
If you are given the resultant velocity and angle of a jump, how do you calculate max height jumped?
Answer: resultant v = horizontal velocity/...
For the vertec, what was the measurement distance from the blue to white paddles?
For the vertec, what was the measurement distance from the blue to white paddles?
Answer: .5 ...
What is the fundamental assumption with measuring time in the air to calculate jump height?
What is the fundamental assumption with measuring time in the air to calculate jump height?
a. Time up = time down
b. Loss height doesn't affect...
You are working with a golfer to try and increase angular velocity of the club head just prior to contact with the golf ball. Which of the following suggestions would help increase the tangential velocity of the ball immediately after contact?
You are working with a golfer to try and increase angular velocity of the club head just prior to contact with the golf ball. Which of the following...
If rear foot angle is positive, the foot is _________, if it is negative, the foot is ___________.
If rear foot angle is positive, the foot is _________, if it is negative, the foot is ___________.
Answer: inverted/pronated; everted/supina...
During the support phase of walking, if the biomechanical angle of the hip is positive the hip is in a ________ position.
During the support phase of walking, if the biomechanical angle of the hip is positive the hip is in a ________ position.
Answer: flex...
Measuring shank angle as a person sits into a chair is an absolute measure of motion. When separately measuring the ankle and foot angle we learn which segment was responsible for the change in shank angle. Which is true and which is false?
Measuring shank angle as a person sits into a chair is an absolute measure of motion. When separately measuring the ankle and foot angle we learn which...
During the support phase of running, at initial foot ground contact if the biomechanical angle of the rear foot is 0 degrees the foot is in a _________ position.
During the support phase of running, at initial foot ground contact if the biomechanical angle of the rear foot is 0 degrees the foot is in a _________...
When measure law of cosines joint angle when the segment is in anatomical position the angular measure is 0 degrees. If the biomechanical joint angle equals 180 degrees the joint is extended. Which is true and which is false?
When measure law of cosines joint angle when the segment is in anatomical position the angular measure is 0 degrees. If the biomechanical joint angle...
In running the biomechanical angle at the knee oscillates between?
In running the biomechanical angle at the knee oscillates between?
Answer: 0-80 degre...
When reporting a joint angle using the law of cosines which of the following is true?
When reporting a joint angle using the law of cosines which of the following is true?
a. Angles are reported with respect to the right horizontal...
Example of angular motion about an external axis:
Example of angular motion about an external axis:
Answer: child on a see s...
During the support phase of walking, at initial foot-ground contact, if the biomechanical ankle is -10 degrees the ankle is:
During the support phase of walking, at initial foot-ground contact, if the biomechanical ankle is -10 degrees the ankle is:
Answer: plantar...
As a golfer examines a shot it is noticed that the putting green is below the current lie of the ball. Assuming air resistance is negligible the optimum angle at which the ball flies off is
As a golfer examines a shot it is noticed that the putting green is below the current lie of the ball. Assuming air resistance is negligible the optimum...
Which of the following is true?
Which of the following is true?
a. Angular kinematics examines the cause of angular motion.
b. The axis of rotation is parallel to the plane...
Which of the following statements is false?
Which of the following statements is false?
a. Looming is the perception of how quickly an object appears to be coming towards someone
b. With...
What factors determine how long a projectile takes to reach its peak?
What factors determine how long a projectile takes to reach its peak?
I. Horizontal velocity
II. Angle at release
III. Vertical velocity
IV....
Which factors influence a projectiles trajectory? Projection:
Which factors influence a projectiles trajectory? Projection:
I. speed
II. Angle
III. Velocity
IV. Height
Answer: velocity and heig...
You are trying to help a person improve their standing horizontal broad jump. What factors are used to calculate how far they jump?
You are trying to help a person improve their standing horizontal broad jump. What factors are used to calculate how far they jump?
I. Horizontal...
As a therapist, you are working with a watermelon picker who must toss watermelons weighing approximately 2kg into a train boxcar. The melon travels up 2m, forward 1.5 m and down .5 m. Assuming air resistance is negligible which of the following statements from a projectile motion prospective are true.
As a therapist, you are working with a watermelon picker who must toss watermelons weighing approximately 2kg into a train boxcar. The melon travels...
At a particular instant in time the horizontal velocity of a person is 7m/s. If the net horizontal impulse applied to the person during that instant was determined to be 5Ns, the magnitude of the horizontal velocity of the person
At a particular instant in time the horizontal velocity of a person is 7m/s. If the net horizontal impulse applied to the person during that instant...
As a consultant working for a manufacturing firm, you are asked to recommend a shoe that would reduce the likelihood that the factory workers will slip if the floor gets wet. At a critical instant in time, the vertical force exerted on the ground by a factory worker is 800N and the horizontal force is 300N. From shoe-floor test, you determine that the coefficient of kinetic friction on the wet floor is 0.7 and the coefficient of static friction is 0.8. Above what force would slip occur?
As a consultant working for a manufacturing firm, you are asked to recommend a shoe that would reduce the likelihood that the factory workers will slip...
Under what conditions is a person most likely to trip?
Under what conditions is a person most likely to trip?
I. High horizontal force
II. Low horizontal force
III. High vertical force
IV. Low vertical...
Which of the following statements must be true to decrease horizontal velocity during walking?
Which of the following statements must be true to decrease horizontal velocity during walking?
a. The horizontal velocity is positive and no...
Factors associated with an object that influences the magnitude of the fluid resistance include:
Factors associated with an object that influences the magnitude of the fluid resistance include:
I. Density
II. Viscosity
III. Shape
a. I,...
Given the following picture, in which direction will the object move? Arrow on top of the round object curved pointing down. Arrows pointing to the right to the left of the object.
Given the following picture, in which direction will the object move?Arrow on top of the round object curved pointing down. Arrows pointing to the right...
In terms of GRF and acceleration, what does it mean when we say a person experiences a period of weighting?
In terms of GRF and acceleration, what does it mean when we say a person experiences a period of weighting?
a. GRF is less than body weight...
For the following, consider a foot on a tile floor in the shower. Which of the following is false?
For the following, consider a foot on a tile floor in the shower. Which of the following is false?
I. If the foot on the tile applies a force...
As a therapist you wish to build up your client's ability to handle larger ground reaction forces. During training, things you would do to increase resultant GRF (horizontal and/or vertical force) experience would be
As a therapist you wish to build up your client's ability to handle larger ground reaction forces. During training, things you would do to increase...
With respect to an object passing through a fluid, drag is greater if the object is experiencing turbulent flow rather
With respect to an object passing through a fluid, drag is greater if the object is experiencing turbulent flow rather
a. Both are true
b. Statement...
What factor does not affect the ground reaction force?
What factor does not affect the ground reaction force?
a. Technique
b. Horizontal velocity
c. Vertical velocity
d. Footwear
e. All of the above...
The ground reaction force represents the
The ground reaction force represents the
a. Net velocity of each of the body segments
b. Velocity of the TBCM
c. Position of the TBCM
d. Weight,...
Friction acts _______ the direction of motion and _______ to the interface between the objects sliding over one another.
Friction acts _______ the direction of motion and _______ to the interface between the objects sliding over one another.
a. With, perpendicular
b....
A person who is a heel strike runner has an advantage over a fore foot (flat foot) striker because
A person who is a heel strike runner has an advantage over a fore foot (flat foot) striker because
a. They do not experience the passive ground...
When jumping, which set of forces determine how high (vertical displacement) you jump?
When jumping, which set of forces determine how high (vertical displacement) you jump?
I. Medial/lateral forces
II. Anterior/Posterior forces
III....
If the acceleration for the TBCM is 0, then the vertical ground reaction force must be 0. If the vertical ground reaction force is 0, then the acceleration of the TBCM is 0.
If the acceleration for the TBCM is 0, then the vertical ground reaction force must be 0. If the vertical ground reaction force is 0, then the acceleration...
Which of the following statements is false?
Which of the following statements is false?
a. A body will maintain a state of rest or constant velocity along a straight line unless acted...
From landing from a jump there is an initial ______ spike associated with the _______ making contact with the ground and a second _______ spike associated with ______ contact.
From landing from a jump there is an initial ______ spike associated with the _______ making contact with the ground and a second _______ spike associated...
Kinetics is important because it
Kinetics is important because it
I. Examines forces
II. Examines causes of movement
III. Helps identify why injuries occur and how to prevent them
IV....
The peak horizontal force on average is _______ in running than in walking. In addition, the time over which the horizontal force acts is ______ in running than in walking.
The peak horizontal force on average is _______ in running than in walking. In addition, the time over which the horizontal force acts is ______ in...
With respect to forces, which of the following is false?
With respect to forces, which of the following is false?
a. If forces act anywhere along its line of action it will produce a similar effect.
b....
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