5 identical balls are at rest on a smooth horizontal table . Four balls are given velocity v and the last one is at rest. Each collision is perfectly inelastic from the shown instant . If total time till last collision age `frac{2.5al}{v}` .Find a.

Two balls each of mass 2kg (one at rest) undergo oblique collision is perfectly elastic, then the angle between their velocities after collision is

Two identical balls each moving with speed v at right angle to each other collide perfectly inelastically. Their speed after collision is

A particle (a mud pallet, say) of mass m strikes a smooth stationary wedge of mass M with as velocity v_(0) at an angle theta with horizontal. If the collision is perfectly inelastic, find the a. velocity of the wedge just after the collision. b. Change in KE of the system (M+m) in collision.

Three blocks of masses m , m and M are kept on a frictionless floor as shown in the figure .The leftmost block is given velocity v towards the right . All the collision between the blocks are perfectly inelastic . The loss in kinetic energy after all the collision is 5//6th of initial kinetic energy. The ratio of M//m will be

A hollow circular tube of radius R and negligible internal diameter is fixed on horizontal surface ball A of mas m is given velocity v_(o) in the shown direction. It collides with ball B of mass 2 m . Collision is perfectly elastic. If centre of loop is origin of co-ordinates system, then co-ordinate of next collision is

Consider on object of mass m moving with velocity v_0 and all other masses at rest initially. Find the % loss in energy after final collision. If all collision are perfectly inelastic.

Two identical balls, each of mass m , are tied with a string and kept on a frictionless surface. Initially, the string is slack. They are given velocities 2u and u . in the same direction. Collision between the balls is perfectly elastic. After the first collision, what is the total loss in kinetic energy of the balls?

A uniform rod of mass m and length L is at rest on a smooth horizontal surface. A ball of mass m, moving with velocity v_0 , hits the rod perpendicularly at its one end and sticks to it. The angular velocity of rod after collision is

A body of mass m is dropped from a height of h . Simultaneously another body of mass 2m is thrown up vertically with such a velocity v that they collide at height h/2 . If the collision is perfectly inelastic, the velocity of combined mass at the time of collision with the ground will be