Motion in a Str...

A body, starting from rest and moving with a constant acceleration, covers a distance s₁ in the 4^th second and a distance s₂ in the 6^th second. The ratio s₁/s₂ is

A car is moving at a certain speed. The minimum distance over which it can be stopped is x. If the speed of the car is doubled, what will be the minimum distance over which the car can be stopped during the same time?

In Kinematics we study

A ball falling from a tower of height 'h' covers a distance h/2 in the last second of its motion. What is the height of the tower? (Take g = 10 ms^–2)

A body moving in a straight line with an initial velocity of 5 ms^–1 and a constant acceleration covers a distance of 30 m in the 3^rd second. How much distance will it cover in the next 2 seconds?

A car starting from rest is accelerated at a constant rate α until it attains a speed v. It is then retarded at a constant rate β until it comes to rest. The average speed of the car for its entire journey is

The driver of a train A moving at the speed of 30 ms^–1 sights another train B moving on the same track towards his train at the speed of 10 ms^–1. He immediately applies brakes and achieves a uniform retardation of 4 ms^–2. To avoid head-on collision, what must be the minimum distance between the trains?

Path length is a

Path length is defined as.