Part 1

A stone is allowed to fall from the top of a tower and covers half the height of the tower in the last second of its journey. Find time taken by the stone to reach the foot of the tower . A stone is allowed to fall from the top of a tower and covers [...]

A stone mass M thrown straight up with initial velocity V reaches a height H. A second stone of mass 2M is thrown straight up with an initial velocity 2V. will be its height A stone mass M thrown straight up with initial velocity V reaches a height H. A second stone of mass 2M [...]

An object is dropped from rest. if it falls a distance s1 during the first second and an additional distance s2 in the next second, the ratio s2/s1 is An object is dropped from rest. if it falls a distance s1 during the first second and an additional distance s2 in the next second the [...]

The velocity of the bullet reduces by (1/20)th of its initial velocity after passing through a plank. The maximum number of planks it can cross is The velocity of the bullet reduces by (1/20)th of its initial velocity after passing through a plank. The maximum number of planks it can cross is September 9, 2020 [...]

A body is fired vertically upward. At half the maximum height , the velocity of the body is 10 m/s. The maximum height reached by the body is A body is fired vertically upward. At half the maximum height the velocity of the body is 10 m/s. The maximum height reached by the body is [...]

A ball falls from height h. After 1 second, another ball falls freely from a point 20m below the point from where the first ball falls. Both of them reach the ground at the same time. What is the value of h? A ball falls from height h. After 1 second another ball falls freely [...]

A body is projected vertically upwards. The times corresponding to height h while ascending and while descending are t1​ and t2​ respectively. Then the velocity of projection is (g is acceleration due to gravity) A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 m long. The [...]

Two bodies are thrown vertically upwards with their initial speeds in ratio 2:3. The ratio of maximum heights reached by them and the ratio of their time taken by them to return back to ground respectively are. A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 [...]

A stone is dropped from a certain height which can reach the ground in 5 s. If the stone is stopped after 3 s of its fall and then allowed to fall again, then the time taken by the stone to reach the ground for the remaining distance is A stone is dropped from a [...]

A ball is thrown vertically upward with certain velocity. Another ball is released from a height of 60m. They meet at a height of 15m. Then what is the initial velocity of first ball ? g = 10 m/s^-2 A ball is thrown vertically upward with certain velocity. Another ball is released from a height [...]