Question

A train 350 m long crosses a man running at speed of 5kmph in the direction same to the train find speed of train

Answer 1

s = 350+350m=700 m

v = 5 km/hr = 5 *1000/3600=1.39 m /sec

t = 350/1.39 = 252 sec

so v of train = 700/252= 2.77 m/sec = 2.77*3600/1000=10 km/hr