An object's
potential energy increases as the
height of the object increases.

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.