Prove that the work done by a body sliding down a smooth inclined plane , from a height h to the ground level, is the same as the work done in a free fall from the same height h to the ground .

A uniform solid spherical ball is rolling down a smooth inclined plane from a height h. The velocity attained by the ball when it reaches the bottom of the inclined plane is v. If the ball is now thrown vertically upwards with the same velocity v, the maximum height to which the ball will rise is

A rain drop of radius 2mm falls from a height of 250 m above the ground. What is the work done by the gravitational force on the drop ?

A ball is thrown vertically upward with a speed v from a height h above the ground . The time taken for the ball to hit the ground is

A uniform solid spherical ball is rolling down a smooth inclined plane form a height h. the velocity attained by the ball when it reaches the bottom of the inclined plane is v. If the ball is now thrwn vertically upwards with the same velocity v. the maximum height to which the ball will rise is

Show that the potential energy of a body raised vertically to a height h is the same as the potential energy of the body raised to the same height along a smooth inclined plane.