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 force
a. I, III
b. II, IV
c. II, III
d. II, IV
e. None of the above
Answer: c
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 force
a. I, III
b. II, IV
c. II, III
d. II, IV
e. None of the above
Answer: c