Two bodies of unequal mass, placed at rest on a frictionless surface, are acted on by equal horizontal forces for equal times.Just after these forces are removed, the body of greater mass will have:
A)greater speed than the other body
B)greater acceleration than the other body
C)smaller momentum than the other body
D)greater momentum than the other body
E)the same momentum as the other body

Question

Quizplus · Accepted Answer

Since the forces are equal and act for equal times, the impulse (force x time) is the same for both bodies. Impulse equals change in momentum, so both bodies will have the same change in momentum, resulting in the same momentum.

Two Bodies of Unequal Mass, Placed at Rest on a Frictionless