A system containing two asteroids is far out in space. The asteroids eventually

Question

A system containing two asteroids is far out in space. The asteroids eventually collide. Which statement is always true? Justify your selection. a. The total momentum and total kinetic energy of the system before and after the collision are the same. b. The total momentum and total kinetic energy of the system before and after the collision are different. c. The total momentum of the system before and after the collision is the same. d. The total kinetic energy of the system before and after the collision is the same.

EXPLAIN WHY PLEASE!

Explanation / Answer

In this case, the collision is perfectly elastic collision. In the case of elastic collision, the two laws conservation of momentum and conservation of kinetic energy are satisfied.

Therefore, the correct option is (a).

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