Question

A train 280 m long us running at a speed of 42km/he. How much time will take to pass a man standing on a platform

Answer 1

we have D=280 and S=42km/h or 35/3m/s

so, T = 280/35×3=2.4sec

Answer 2

given,distance = 280 m and speed =42 km/h firstly change the speed km to m . speed =42×5/18 = 210/18 ........................now time=distance/speed =280/210/18 =280×18 /210= 13.5 sec