Gopal dropped an apple from the top his flat at a height of `10m`.He told his sister Seetha on the ground below that it will reach the ground in `2 sec` after he drops it. Can she catch it after `2sec`?

A ball is dropped from the top of a tower.prove that,the height of the tower is 20m if the ball reaches the ground with a velocity 20 m//s .

A balloon is ascending at the rate of 14ms^(-1) and at a height of 98m above the ground, a stone is dropped from it. a)State whether the motion of the balloon is accelerated or retarded? b)After how much time does the stone reach the ground? c)Determine the velocity with which the stone strikes the ground.

Raju dropped a rubber ball of mass m from a height h to the ground . He observed that the ball rebounds vertically and along the same line to a height h_1 which is less than h. If the rubber ball is allowed to fall on a spring placed on the ground then what change will Raju note is in the height of rebound?