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. (gt gt m) with speed 4 m/s along the normal to tha wall. The speed of wall is 1 m/s towards the ball. The speed of the ball after an elactic collision with the wall is

A ball of mass m approaches a heavy wall of mass M with speed 4 m/s along the normal to the wall. The speed of wall before collision is 1m/s towards the ball. The ball collides elastically with the wall. What can you say about the speed of the ball after collision? Will it be slightly less than or slightly higher than 6 m/s ?

A ball of mass m approaches a heavy wall of mass M with speed 4 m/s along the normal to the wall. The speed of wall before collision is 1m/s towards the ball. The ball collides elastically with the wall. What can you say about the speed of the ball after collision? Will it be slightly less than or slightly higher than 6 m/s ?

A ball of mass 0.1 kg strikes a wall normally with a speed of 30 m s ^( - 1 ) and rebounds with a speed of 20 ms ^( - 1 ) . The impulse of the force exerted by the wall on the ball is

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 ball of mass m collides with a wall with speed v and rebounds on the same line with the same speed. If the mass of the wall is taken as infinite, then the work done by the ball on the wall is

A ball of mass m collides with a wall with speed v and rebounds on the same line with the same speed. If the mass of the wall is taken as infinite, then the work done by the ball on the wall is

A highly elastic ball moving at a speed of 3 m//s approaches a wall moving towards it with a speed of 3 m//s . After the collision. the speed of the ball will be