A ball of mass 500 gram strikes a wall with a velocity of 80 m/s and rebounds with the same velocity. If the tme of contact is 1/30 sec, then the force exerted by the ball on the wall is

A body of mass 2 kg collides with a wall with speed 100 m / s and rebounds with same speed. If the time of contact was 1/50 second, the force exerted on the wall is

A cricket ball of mass 0.5 kg strikes a circket bat normally with a velocity of 20" m s"^(-1) and rebounds with a velocity of 10" m s"^(-1) . The impulse of the force exerted by the ball on the bat is

A ball hits a wall with a velocity of 30 ms^(-1) and rebounces with the same velocity. What is the change in its velocity ?

A body of mass 2kg collides with a wall with speed 100 m/s and rebounds with same speed. If the time of contact was 1/50 second, the force exerted on the wall is

A ball of mass 250 g moving with 20 m/s strikes a vertical wall and rebounds along the same line with a velocity of 15 m/s. If the time of contact is 0.1 s, the force exerted by the wall on the ball is

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

500 steel ballls each of mass 1 gram strike normally one sq. cm area of a metal plate per second, with a velocity of 10 m/s and rebound with the same velocity. What is the pressure exerted by the balls on the surface of the plate?

A ball of mass 0.1 kg is thrown against a wall. It strikes the wall normally with a velocity of 30 ms^(-1) and rebounds with a velocity of 20 ms^(-1) . Calculate the impulse of the force exerted by the wall.

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