Question

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

Answer 1

time=distance/speed

42*5/18m/s
280*18/42*5=24sec

Answer 2

Answer:

It takes 24 seconds for the train running at a speed of 42 km/hr to pass a man standing on a platform.

Step-by-step explanation:

To pass a man standing on the platform,

Distance travelled by the train = 280 m.

Speed of the train = 42 km/hr. =$\frac{42 \times 1000}{60 \times 60} \mathrm{m} / \mathrm{s}$  = 35/3 m/s.

The mathematical formula to find the time taken by the train to pass a man on the platform is,

$\bold{=\frac{\text {Distance travelled by the train}}{\text {Speed of the train}}}=\frac{280 \mathrm{m}}{\frac{35 \mathrm{m}}{3 \mathrm{s}}}=\frac{280 \times 3}{35}$            

= 24 s.

Hence, in 24 seconds the train crossed.