Physics, 05.02.2020 00:50, AnNguyen

When is momentum conserved?
a. it is always conserved.

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

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

d. momentum is never conserved.

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When is momentum conserved?
a. it is always conserved.

b. momentum is conserved w...