A hockey ball of mass 200 g travelling at `10 ms^( -1)` is struck by a hockey stick so as to return it along its original path with a velocity at ` 5ms^( -1)`. Calculate the change in momentum occurred in the motion of hockey ball by the force applied by hockey stick.

A ball is thrown vertically upwards with a velocity of 49 ms^-1 . Calculate :The total time it takes to return to the surface of earth.

A tennis ball of mass 6.0 (10 *-2) kg is moving with a speed of 62ms-1 . Calculate the wavelength associated with this moving tennis ball.

An object of mass 100 kg is accelerated uniformly from a velocity of 5 ms^(-1) to 8 ms^( -1) in 6s. Calculate the initial and final momentum of the object. Also find the force exerted on the object.

A ball of mass 100 g moving with a velocity of 10ms^-1 is stopped by a boy in 0.25sec. Calculate the force applied by the boy to stop the ball.

A bullet of mass 10 kg travelling horizontally with a velocity of 150 ms^(-1) strikes a stationary wooden block and come to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block. Calculate the magnitude of force exerted by the wood in block in the bullet.