A 5 kg ball and a 10 ball approach each other with equal speeds of `21 ms^(-1)` . Determine their speeds after the elastic collision.

A 10kg ball and 20kg ball approach each other with velocities 20ms^(-1) and 10ms^(-1) respectively. What are their velocities after collision if the collision is perfectly elastic?

A 10kg ball and a 20kg ball approach each other with velocities 20m//s and 10m//s respectively. What are their velocities after collision, if the collision is perfectly elastic ?

A 10 kg ball and 20 kg ball approach each other with velocities 20 ms^(-1) and 10 ms^(-1) respectively . What are their velocities after collision if the collision is perfectly elastic ?

Two balls of equal masses moving with equal speed in mutually perpendicular directions, stick together after collision. If the balls were initially moving with a speed of 30/√2 ms^(-1) each, the speed of their combined mass after collision is

Two balls of equal masses moving with equal speed in mutually perpendicular directions, stick together after collision. If the balls were initially moving with a speed of 30/√2 ms^(-1) each, the speed of their combined mass after collision is

A ball of mass m approaches a wall of mass M (M>>m), with speed 2 ms^(-1) along the normal to the wall. The speed of wall is 1 ms^(-1) towards the ball. The speed of the ball after an elastic collision with the wall is-

A ball of mass m approaches a wall of mass M (M>>m), with speed 2 ms^(-1) along the normal to the wall. The speed of wall is 1 ms^(-1) towards the ball. The speed of the ball after an elastic collision with the wall is-