In a process in which the impulse on a system is zero, the law that must hold true is
A) conservation of kinetic energy.
B) conservation of potential energy.
C) conservation of momentum.
D) none of the above.

Question

Quizplus · Accepted Answer

When the impulse on a system is zero, it means there is no net external force acting on the system. According to Newton's second law, a change in momentum is caused by an external force. Therefore, if the impulse (which is the change in momentum) is zero, it implies that the total momentum of the system remains constant. This is the principle of conservation of momentum.

In a Process in Which the Impulse on a System