Motion in a Str...

A very large number of balls are thrown vertically upwards in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of ball thrown per minute is (take g = 10 m/s²)

A body falls from rest in the gravitational field of the earth. The distance travelled in the fifth second of its motion is (g = 10 m/s²)

A balloon is rising vertically up with a velocity of 29 ms^–1. A stone is dropped from it and it reaches the ground in 10 sec. The height of the balloon when the stone was dropped from it is (g = 9.8 m/s²)

A ball is released from the top of a tower of height h meters. It takes T sec to reach the ground. What is the position of the ball in T/3 sec?

Two balls of same size but the density of one is greater than that of other are dropped from the same height, then which ball will reach the earth first (air resistance is negligible)

A body is thrown vertically upwards with velocity u. The distance travelled by it in the fifth and the sixth sec are equal. The velocity u is given by (g = 9.8 m/s²)

A body, thrown upwards with some velocity reaches the maximum height of 50 m. Another body with double the ass thrown up with double the initial velocity will reach a maximum height of

A stone falls freely from rest and the total distance covered by it in the last second of its motion equals the distance covered by it in the first three sec of its motion. The stone remains in the air for

Two identical metal spheres are released from the top of a tower after t sec of each other such that they fall along the same vertical line. If air resistance is neglected, then at any instant of time during their fall

Free fall of an object (in vacuum) is a case of motion with