Question

If a projectile hits a stationary target, and the projectile stops while the target moves at the same speed as the incoming speed of the projectile,
A) the mass of the projectile is much less than the mass of the target.
B) the mass of the projectile is equal to the mass of the target.
C) the mass of the projectile is much greater than the mass of the target.
D) nothing can be said about the masses of the projectile and target without further information.
E) this is an unphysical situation and will not actually happen.

Answer

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