Ball of mass 5.0 kilograms moving at 20m/s collides with ball B of unknown mass moving at 10m/s in the same direction . After collision ball A moves at 10m/s an ball B at 15m/s , both still in the same direction. What is the mass of ball B?

A ball of mass M moving with a velocity v collides perfectly inelastically with another ball of same mass but moving with a velocity v in the opposite direction. After collision

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 2kg moving with speed 5m/s collides directly with another ball of mass 3kg moving in the same direction with speed 4m/s. The coefficient os restitution is 2/3. Find the velocities of both ball after the collision.

A ball of mass 4 kg moving on a smooth horizontal surface makes an elastic collision with another ball of mass m at rest in the line of motion of first ball. If after collision first ball moves in the same direction with one fourth of its velocity before collision, then mass of second ball is

A ball moving with velocity of 6 m/s strikes an identical stationary ball. After collision each ball moves at an angle of 30^(@) with the original line of motion. What are the speeds of the balls after the collision ?

A ball of mass 1kg moving with 4m^-1 along +x-axis collides elastically with an another ball of mass 2kg moving with 6m//s is opposite direction. Find their velocities after collision.

A 2 kg ball , moving at 10 m//s , collides head - on with a 3 kg ball moving in the opposite direction at 20 m//s . If the coefficient of restitution is 1//3 , then the energy lost in the collision is