A ball is dropped onto a horizontal floor. It reaches a height of `144cm` on the first bounce and `81cm` on the second bounce. The height it attains on the third bounce 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

A steel ball is dropped on a hard surface from a height of 1m and rebounds to a height of 64cm . The maximum height attained by the ball after n^(th) bounce is (in m)

A ball is dropped on a horizontal surface from height h. If it rebounds upto height (h)/(2) after first collision then coefficient of restitution between ball and surface is

A ball is projected form the ground at an angle of 45^(@) with the horizontal surface .It reaches a maximum height of 120 m and return to the ground .upon hitting the ground for the first time it loses half of its kinetic energy immediately after the bounce the velocity of the ball makes an angle of 30^(@) with the horizontal surface .The maximum height it reaches after the bounce in metres is _______

A ball of mass m is dropped onto a floor from a certain height. The collision is perfectly elastic and the ball rebounds to the same height and again falls. Find the average force exerted by the ball on the floor during a long time interval.

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

A ball is dropped from height 'H' onto a horizontal surface. If the coefficient of restitution is 'e' then the total time after which it comes to rest is

A ball is dropped from height 'H' onto a horizontal surface. If the coefficient of restitution is 'e' then the total time after which it comes to rest is

A small ball is dropped from rest from height 10 m on a horizontal floor. If coefficient of restitution between ground and body is 0.5 then find the maximum height it can rise after collision.

Bryophytes seldom reach a height of more than 20 cm because they