Question

a train 28 m long is running at a speed of 42km/h . how much time will it take to pass a man standing on a platform?



Please solve this question.

This question is of chapter 4 ( Direct and inverse variation)


Of class 8 ( DAV)

Answer 1

Answer:

First convert 42 km per hour to metre per second and the use the formula of time that is distance by speed.

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Answer 2

Answer:

5.45 mins

Step-by-step explanation:

distance = train length ( man length is negligible )  

              = 28 meters

speed = 42km/hr

           = 42 x 5/18 (converting km/hr to m/sec )

           = 42 x 5/18

time = distance / speed

       = 28 x 42 x 5/18

       = 327 sec approx.

       = 5.45 mins