Ball A is at rest somewhere on a smooth billiards table (l/b= 3). An identical ball B moving with velocity `2ms^(-1)`, collides with a elastically. After 1/2 sec both the balls simultaneously fall into pockets marked 1 and 2. Find area of the table in `m^(2)`

A ball of mass m moving with velocity v collides head on elastically with another identical ball moving with velocity - V. After collision

A ball of mass m_(1) , collides elastically and head on with ball of mass m_(2) at rest. Then

A truck moving on horizontal road east with velocity 20ms^(–1) collides elastically with a light ball moving with velocity 25ms^(–1) along west. The velocity of the ball just after collision

A ball is moving with speed 20 ms^(-2) collides with a smooth surface as shown in figure. The magnitude of change in velocity of the ball will be

A ball of mass m moving with velocity v collides elastically with another ball of identical mass coming from the opposite direction with velocity 2v. Their velocities after collisions are-

Three identical balls 1, 2 and 3 are placed together at rest on a smooth horizontal surface. A fourth identical ball moving with velocity u in line of first three balls collides head on elastically as shown in figure, then

A smooth hollow U shaped tube of mass 2m is lying at rest on a smooth horizontal table. Two small balls of mass m, moving with velocity u enter the tube simultaneously in symmetrical fashion. Assume all collisions to be elastic. Find the final velocity of the balls and the tube.

A truck moving on horizontal road towards east with velocity 20ms^(1) collides elastically with a light ball moving with velocity 25ms^(-1) along west. The velocity of the ball just after collision