Momentum and CollisionHard

Question

A body of mass M moves in outer space with velocity v. It is desired to break the body in to two parts so that he mass of one part is non- tenth of the total mass. After the explosion, the velocity part cones to rest while the lighter part continues to move in the original direction of motion. The velocity of the small part will be

Options

A.v
B.
C.
D.10 v
10 v

Solution

Mv = 0 + v2 ⇒ v2 = 10 v

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