Question

A train 280 m long is running at a speed of 42km hour how much time will it to pass a man standing on a platform

Answer 1

Solution:-
Distance=280m
Speed=42km/h
In order to convert it in m/s we will multiple it by 5/18.
$= > 42 \times \frac{5}{18} \\ = > \frac{105}{9}$
Now,since we know that,
$time = \frac{distance}{speed} \\ = > \frac{280}{ \frac{105}{9} } \\ = > \frac{280 \times 9}{105}$
$= > 24$
Hence,the time=24seconds