Question

A train is running at the rate of 40 km/hr. A man is also going in the same direction parallel to the train at a sppednof 25kmph.if the train crosses the man in 48seconds the length of the train is

Answer 1

Answer:

The relative velocity of train with respect to man is 40 - 25 = 15 kmph

For the man it appears that the train is going at 15kmph with respect to him.

converting the pseed into m/s we get

15 x (5/18) = 25/6 m/s

The length of train = (speed with respect to man) x (time taken to cross the man)

The length of train = 25/6 m/s x 48s = 25 x 8 m = 200m