1.

A bullet of mass m moving at a speed v hits a ball of mass M kept at rest. A small part having mass m' breaks from the ball and sticks to the bullet. The remaining ball is found to move at a speed v1 in the direction of the bullet. Find the velocity of the bullet after the collision.

Answer»

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ANSWER::


Mass of the bullet = m

Speed of bullet = v

Mass of BALL = M

Frictional mass from ball = m'

Let velocity after collision = v₁


Using law of conservation of momentum ,


mv + 0 = (m' + m) v' + (M - m') v₁ (v' = final velocity of bullet + frictional mass)


v' = [mv - (M + m')v₁] / (m + m')


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