Question

A train 280m long running at the speed 42km /hr. How much time it take to pass a man standing on platform

Answer 1

Heya mate
here is your answer

d=280m
s=42km/hr
=42×5/18
=210/18
=70/6 m/s

Time taken=280×6/70
=1680/70
=24 seconds

I hope this will help you....✌️✌️
thank u :-)

Answer 2

The length of train is in meters

Therefore, speed = 42km/ hr

= 42×1000/ 3600

=11.66m/s

$time = \frac{distance}{speed}$

$\: \: \: \: \: = \frac{280}{11.66}$

=24 sec

Therefore, the train take 24 seconds to pass a man standing on a platform