*Biomechanics* A nurse is trying to push a gurney into the hospital. Try as he might...
*Biomechanics*
A nurse is trying to push a gurney into the hospital. Try as he might the nurse cannot push the gurney over the curb. When he walks around to the other side and pulls the gurney over the curb he can do it easily. This is because:
a. The direction of the horizontal force he is applying is different between pushing and pulling.
b. The direction of the vertical force he is applying is different between pushing and pulling.
c. The coefficient of friction between the gurney and floor is higher when pushing than pulling.
d. all of the above
e. only A and C
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*Biomechanics*
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