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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 8 - COM, Momentum and Collision > three blocks are initially placed as shown .in figure block A has a mass m and initial velocity v to the right. block B with mass m and block C with mass 4m are initially at rest.Neglecting friction all collisions are elastic . find the final velocity of blcok A.

three blocks are initially placed as shown .in figure block A has a mass m and initial velocity v to the right. block B with mass m and block C with mass 4m are initially at rest.Neglecting friction all collisions are elastic . find the final velocity of blcok A.

A ball of mass 50g is dropped from a height h=10m. It rebounds losing 75 percent of its total mechanical energy. If it remains in contact with the ground for △t=0.01sec find the impulse of the impact force.