Question

Two trains A and B are moving with velocity 54 km/h in a parallel track opposite to each other and a monkey is moving on the roof of train Bagainst the direction of motion with speed of 10 m/s .Calculate :

1- Relative velocity of train A with respect to train B

2- Relative velocity of train B with respect to train A

3- Relative velocity of monkey with respeect ti train A

4- Relative velocity of ground with respect to monkey.

Answer 1

1 Va=54kmph=15mps
Vb=54kmph=15mps(both are parallel)
therefore,Vab=54-54=0kmph
2 Vba=54-54=0