Question

train which is 150m long travels with a speed of 15m/s find the time in which the train crosses a man in a platform​ ( length of platform is not given)

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Answer 1

Given:

The length and speed of the train are 150 m and 15 m/s respectively.

The length of the platform is 30 m 

Concept used:

If a train is crossing a platform then the total distance becomes the sum of the length of the train and the platform.

Formula used:

Time = Distance/Speed

Calculation:

According to the concept, we have

Total distance = (150 + 30) m = 180 m

So, time is taken by train to cross the platform = (180/15) seconds = 12 seconds.

∴ The train will cross the platform in 12 seconds.