Two ball `A` and `B` having masses 1kg and 2kg, moving with speeds `21m//s` amd `4m//s` repectively in opposite direction, collide head on. After collision `A` moves with a speed of `1m//s` in the same direction, then correct statements is:

Two balls A and B having masses 1 kg and 2 kg, moving with speeds 21 m/s and 4 m/s respectively in opposite direction, collide head on. After collision A moves with a speed of 1 m/s in the same direction, then the coefficient of restitution is

Two smooth spheres A and B of equal radii but masses 1 kg and 2 kg move with speeds 21m/s and 4 m/s respectively in opposite directions and collide. The velocity of A is reduced to 1 m/s in the same direction. Then, which of the following statements is incorrect?

Two particles A and B of equal size but of masses m kg and 2 m kg are moving directly towards each other with speeds 21 m/s and 4 m/s respectively. After collision, A moves with a speed of 1 m/s in the original direction. Then:

Two particles A and B of equal size but of masses m kg and 2m kg are moving directly towards each other with speeds 21 m//s and 4 m//s respectively. After collision, A moves with a speed of 1 m//s in the original direction. Then:

Two particles A and B of mass 3kg and 2kg moving with speed 10m//s and 5m//s as shown in figure. Find the maximum momentum that particles A can have after collision with B .

Two particles A and B of mass 3kg and 2kg moving with speed 10m//s and 5m//s as shown in figure. Find the maximum momentum that particles A can have after collision with B .

Two particles A and B of mass 3kg and 2kg moving with speed 10m//s and 5m//s as shown in figure. Find the maximum momentum that particle B can have after collision with A

Two particles A and B of mass 3kg and 2kg moving with speed 10m//s and 5m//s as shown in figure. Find the maximum momentum that particle B can have after collision with B .

Two particles of mass 1kg and 2kg are moving along the same line with speeds 2m//s and 4m//s respectively. Calculate the speed of the centre of mass of the system if both the particles are moving in the same direction.

Two particles of mass 1kg and 2kg are moving along the same line with speeds 2m//s and 4m//s respectively. Calculate the speed of the centre of mass of the system if both the particles are moving in the same direction.