Relative speed of two persons moving with u m/s and v m/s in opposite direction where u>v

Relative speed of two persons moving with u m/s and m/s in same direction where u>V

Relative speed of two bodies moving in opposite direction with speed u and m/s .

Relative speed of two bodies moving in same direction with speed u and v m/s: where (u>v)

One train A 100m long is moving in a direction with a speed of 20m/s . Another train B 150m long is moving with a speed of 30m/s in the opposite direction.The train B crosses the train A in a time A) 5s B) 10s C) 18s D) None of these

Two balls A and B having masses 1 kg and 2 kg, moving with speeds 21 m/s and 4 m/s respectively in opposite direction, collide head on. After collision A moves with a speed of 1 m/s in the same direction, then the coefficient of restitution is

A 120 m long train is moving in a direction with speed 20 m/s . A traing B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time

Two ball A and B having masses 1kg and 2kg, moving with speeds 21m//s amd 4m//s repectively in opposite direction, collide head on. After collision A moves with a speed of 1m//s in the same direction, then correct statements is:

If two train of length a metres and b metres are moving in opposite direction at u m/s and v m/s: then time taken by trains to cross each other.