A ball takes ' t seconds to fall from height h_(1) and 3t seconds to fall from a height h_(2) .Then (h_(1))/(h_(2)) is

Two steel balls fall freely on an elastic slab. The first ball is dropped from a height h_(1) and the second from a height h_(2)(h_(2) lt h_(1)) sec after the first ball. After the passage of time T, the velocities of the balls coincide in magnitude and direction. Determine the time T and the time interval during which the velocities of the two balls will be equal assuming that the balls do not collide.

A ball of mass m is thrown in air with speed v_(1) from a height h_(1) and it is at a height h_(2)(gth_(1)) when its speed becomes v_(2) . Find the work done on the ball the air resistance.

A body is allowed to fall on the ground from a height h_(1) . If it is rebound to a height h_(2) then the coefficient of restitution is:

A ball of mass m falls vertically to the ground from a height h_1 and rebound to a height h_1 and rebound to a height h_2 . The change in momentum of the ball on striking the ground is.

A body is falling from a height h. After it has fallen a height (h)/(2) , it will possess

A particle is released from rest from a tower of height 3h. The ratio of time intervals for fall of equal height h i.e. t_(1):t_(2):t_(3) is :

A particle falls from a height h and rebounds to a height h _(1) ( h _(1) lt h), then which of the graph represents the motion correct ?