A) When a ball is dropped on to the ground from certain height it comes to rest after few bounces loosing all of its energy.It is an example of the violation of conservation of energy. B) In uniform circular motion the acceleration of the body is constant

A ball dropped from a height of 2 m rebounds to a height of 1.5 m after hitting the ground. Then fraction of energy lost is

A ball is dropped onto a floor from a height of 10 m . If 20% of its initial energy is lost,then the height of bounce is

An object is dropped from a height h from the ground. Every time it hits the ground it looses 50% of its kinetic energy. The total distance covered as t to oo is -

A ball is dropped from height h on horizontal floor. If it loses 60% of its energy on hitting the floor then height upto which it will rise after first rebounce is

Assertion: A ball is dropped from a certain height above the free suface of and ideal fluid. When the ball enters the liquid it mau accelerate or retard. Reason: Ball accelerates of retards it all depends on the dinsity of ball and the density of liquid.

A lead ball at 25^@ C is dropped from a height of 2 km. It is heated due to air resistance and it is assumed that all of its kinetic energy is used in increasing the temperature of ball. Find the final temperature of the ball.

A 500 g ball is released from a height of 4m. Each time it makes contact with the ground, it loses 25% of its kinetic energy. Find the kinetic energy it possess just after the 3^(rd) hit

A rock of mass m is dropped to the ground from a height h . A second rock, with mass 2m , is dropped from the same height. When the second rock strikes the ground, what is its kinetic energy? (a) Twice that of the first rock, (b) four times that of the first rock, (c) same as that of the first rock, (d) half as much as that of the first rock, (e) impossible to determine.

A particle starts from rest and traverses a distance l with uniform acceleration, then moves uniformly over a further distance 2l and finally comes to rest after moving a further distance 3l under uniform retardation. Assuming entire motion to be rectilinear motion the ratio of average speed over the journey to the maximum speed on its ways is