Question

A bullet with a velocity of 200 m/s is shot at a 2-kg block resting on a horizontal frictionless surface. The bullet imbeds in the block and the bullet-block system slides across the surface with a speed of 5 m/s.

A) what is the mass of the bullet?
B)The coefficient of friction between the rough surface and the block,
C) the time it takes the bullet-block combination to come to rest (after it comes in contact with the rough surface)

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