Question

When is momentum conserved?

A. it is conserved when only two objects collide; more than two objects can't conserve momentum.

B. it is always conserved.

C. momentum is conserved when the system is closed, which means there are no forces, like friction, acting on it.

D. momentum is never conserved.

Answer 1

C. momentum is conserved when the system is closed, which means there are no forces, like friction, acting on it.

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Answer 2

C. momentum is conserved when the system is closed, which means there are no forces, like friction, acting on it.