A. is constant although energy may be transformed from one form to another.
B. always decreases due to dissipation and thermal losses.
C. may increase but never decrease.
D. is merely the sum of kinetic and potential energy.
E. is indeterminable.
You ride your mountain bike to the top of a mountain. Two paths are
available, path A is twice as long as path B. The average force you must
exert on your pedals will be
A. one-fourth as much on the longer path than on the shorter path.
B. one-half as much on the longer path than on the shorter path.
C. twice as much on the longer path than on the shorter path.
D. the same on both paths.
E. undetermined; it will depend upon the time taken along the
time it takes.
Spring 2004
