When injury results from a single large force application, such as a tackle, the injury is usually termed what?

When injury results from a single large force application, such as a tackle, the injury is usually termed what? 

A. acute
B. chronic
C. repetitive
D. all of the above


Answer: A. acute

Which of the following is true regarding electromyography?

Which of the following is true regarding electromyography? 

A. treats muscle injury with electrical impulses
B. measures the electrical activity produced by a muscle
C. both A and B
D. none of the above


Answer: D. none of the above

Which of the following statements is/are true regarding vector algebra?

Which of the following statements is/are true regarding vector algebra? 

A. In vector resolution, when a vector is resolved into two components, they are always perpendicular.
B. In vector composition, only perpendicular components can be composed into a resultant.
C. both A and B
D. none of the above


Answer: A. In vector resolution, when a vector is resolved into two components, they are always perpendicular.

When absorbing the force of a baseball, which of the following will change the impulse?

When absorbing the force of a baseball, which of the following will change the impulse? 

A. reduce the force with which the ball is thrown
B. wear a catcher's mitt
C. "give" with the ball when catching
D. both A and B
E. all of the above


Answer: E. all of the above

The formula for torque includes force and what other variable?

The formula for torque includes force and what other variable? 

A. perpendicular distance from the axis of rotation
B. moment arm
C. force arm
D. all of the above are correct


Answer: D. all of the above are correct

Mechanical stress in the lumbar vertebrae is less than expected because of which of the following structural details?

Mechanical stress in the lumbar vertebrae is less than expected because of which of the following structural details? 

A. bears more weight or force than other vertebrae
B. larger weight-bearing surface area than other vertebrae
C. both A and B
D. none of the above


Answer: B. larger weight-bearing surface area than other vertebrae

A bending force can result in which of the following types of stress?

A bending force can result in which of the following types of stress? 

A. compression
B. tension
C. torsion
D. both A and B
E. all of the above


Answer: D. both A and B

A free body diagram includes which of the following?

A free body diagram includes which of the following? 

A. sketch of an object, body, or body part being analyzed
B. vectors representations of all forces acting on the system
C. both A and B
D. none of the above


Answer: C. both A and B

In a free body diagram of the human body, where would the vector representing weight of the body originate?

In a free body diagram of the human body, where would the vector representing weight of the body originate? 

A. contact between the feet and the ground
B. center of gravity
C. head
D. need more information


Answer: B. center of gravity

In a free body diagram of the human body, which direction would the vector representing weight of the body point?

In a free body diagram of the human body, which direction would the vector representing weight of the body point? 

A. up
B. down
C. depends on body orientation
D. not possible to determine


Answer: B. down

Which of the following will reduce the pressure of a baseball against a catcher's hand?

Which of the following will reduce the pressure of a baseball against a catcher's hand? 

A. reduce the force with which the ball is thrown
B. wear a catcher's mitt
C. both A and B
D. none of the above


Answer: C. both A and B

Which of the following is true regarding volume?

Which of the following is true regarding volume? 

A. units are cm3
B. units are liters
C. directly proportional to mass
D. both A and B
E. all of the above


Answer: D. both A and B

The "quantity of matter composing a body" defines what?

The "quantity of matter composing a body" defines what? 

A. weight
B. momentum
C. mass
D. inertia


Answer: C. mass

Inertia is directly proportional to which quantities?

Inertia is directly proportional to which quantities? 

A. mass
B. force
C. acceleration
D. all of the above


Answer: A. mass

When muscles on opposite sides of a joint develop tension, what determines the direction of joint movement?

When muscles on opposite sides of a joint develop tension, what determines the direction of joint movement? 

A. muscle strength
B. muscle flexibility
C. net torque
D. none of the above


Answer: C. net torque

Which of the following is/are scalar quantities?

Which of the following is/are scalar quantities? 

A. force
B. mass
C. velocity
D. all of the above


Answer: B. mass

Scalar quantities and vector quantities have which of the following properties in common?

Scalar quantities and vector quantities have which of the following properties in common? 

A. magnitude
B. direction
C. both A and B
D. none of the above


Answer: A. magnitude

The rotary effect created by an eccentric force defines what?

The rotary effect created by an eccentric force defines what? 

A. torque
B. moment of force
C. rotary force
D. all of the above


Answer: D. all of the above

Stress fractures result from which of the following types of loading?

Stress fractures result from which of the following types of loading? 

A. acute loading
B. repetitive loading
C. both A and B
D. neither A nor B


Answer: B. repetitive loading

Which of the following is a correct unit of torque?

Which of the following is a correct unit of torque? 

A. N-m
B. N/s
C. Ns
D. kg m


Answer: A. N-m