A body, thrown from the balloon reached the ground in 30 seconds. If the balloon is moving upwards with constant velocity of `100 m//s`, then find the height of the balloon at that time.

A body is thrown upwards with a velocity 9.8 m/s what shall be the height attained by it?

A ball of mass 100g moves with a velocity of 100m*s^(-1) . Find the wavelength of the wave associated with the moving ball.

A body of mass 10 kg is moving with a velocity of 100 m/s. find the force needed to stop it in 5 seconds.

A balloon is observed simultaneously from three points A, B and C on a straight road directly under it. The angular elevation at B is twice and at C is thrice that at A . If the distance between A and B is 200 metres and the distance between B and C is 100 metres, then find the height of balloon above the road.

A body of mass 1kg , at a height of 8m above the ground , is thrown vertically upwards at a velocity of 250 cm*s^(-1) . What will be the kinetic energy of the body when it just reaches the ground ? ( g=980 cm*s^(-2))

A stone is dropped from the top of a tower 400 m high. At the same time another stone is thrown upwards from the ground with a velocity of 100 "m.s"^(-2) . When and where will they meet each other? [g = 9.8 "m.s"^(-2) ]

A piece of stone is dropped from the top of a tower 90 m tall and at the same time another piece of stone is thrown upwards with a velocity of 30 "m.s"^(-1) from the base of the tower. When and where will the stone pieces meet?