Home
Class 12
PHYSICS
A train is moving with velocity u sees a...

A train is moving with velocity u sees another train at a distance s ahead of it moving with velocity u'. If the first train now moves with maximum retardation f and second with maximum acceleration f'. If `f (u gt u')` it is just possible to avoid a collision if
`(u-u')^(2) =2(f+f') s.`

Text Solution

Verified by Experts

The correct Answer is:
T
Promotional Banner

Similar Questions

Explore conceptually related problems

The minimum stopping distance of a car moving with velocity u is x . If the car is moving with velocity 2v, then the minimum stopping distance will be.

A body is moving with an initial velocity u and a uniform acceleration a. Find the distance covered by the body in nth second.

A particle of mass m is moving with speed u. It is stopped by a force F in distance x if the stopping force is 4 F then

A ball of mass m is moving with velocity u and collides head on with another identical body at rest . What is the maximum possible loss of kinetic energy due to collision ?

A stone projected upwards with a velocity u reaches two points P and Q separated by a distance h with velocities u//2 and u//3 . The maximum height reached by it is

A train is moving eastwards with a velocity of 10 ms^-1 . On a parallel truck another train passes with a velocity of 15 ms^-1 eastwards, To the passengers in the second train, the first train will appear to be moving with a velocity.

A ball of mass '2m' moving with velocity u hat(i) collides with another ball of mass 'm' moving with velocity - 2 u hat(i) . After the collision, mass 2m moves with velocity (u)/(2) ( hat(i) - hat(j)) . Then the change in kinetic energy of the system ( both balls ) is