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 ?

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 ?

Two balls of masses 10 kg and 20 kg approach each other with velocities 30 m/s and 20 m/s respectively . Calculate their velocities after they undergo a perfectly eleastic collision .

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.

Two steel balls A and B of mass 10 kg and 10 g rolls towards each other with 5 m/s and 1 m/s respectively on a smooth floor. After collision, with what speed B moves (perfectly elastic collision)?

Two steel balls A and B of mass 10 kg and 10 g rolls towards each other with 5m/s and 1 m/s respectively on a smooth floor. After collision, with what speed B moves [perfectly elastic collision]?

Two identical balls are approaching towards each other on a straight line with velocity 2m//s and 4m//s , respectiely. Find the final velocities after elastic collision between them.

A body of mass 10 kg moving with a velocity of 5 ms^(-1) hits a body of 1 gm at rest. The velocity of the second body after collision. Assuming it to be perfectly elastic is

Two blocks of masses 10kg and 20kg moving at speeds of 10ms^(-1) and 20ms^(-1) respectively in opposite direction approach each other and colide .If the collision is completely inelastic , find the thermal energy developed in the process

Two bodies of masses 5 kg and 3 kg moving in the same direction along the same straingh line with velocities 5 ms^(-1) and 3 ms^(-1) respectively suffer one-dimensional elastic collision . Find their velocities after the collision .