Chapter 3 – Motion in One Dimension

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 [...]

A particle is projected vertically upwards at 30 m/s. The distance travelled in the 1 s of motion is ( take g = 10 m/s^-2) A particle is projected vertically upwards at 30 m/s. The distance travelled in the 1 s of motion is ( take g = 10 m/s^-2) September 9, 2020 Category: Chapter [...]

A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 m long. The time taken by it is A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 m long. The time taken by it is September 9, 2020 [...]

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 seconds of its motion. The stone remains in the air of A stone falls freely from rest and the total distance covered by it in [...]

A body A is thrown up vertically from the ground with velocity vo​ and another body B is simultaneously dropped from a height H. They meet at a height 2/H​ if vo​ is equal to A body A is thrown up vertically from the ground with velocity vo​ and another body B is simultaneously dropped [...]

A bullet on penetrating 30 cm into its target loses its velocity by 50%. What additional distance will it penetrate into the target before it comes to rest ? A bullet on penetrating 30 cm into its target loses its velocity by 50%. What additional distance will it penetrate into the target before it comes [...]