Question

A 450 m long train is running with a speed of 20 m/s . The time taken by it to cross a pole is

Answer 1

Answer: SPEED = 72KMPH/HR

Explanation:Speed = 20 m /s:

20 m × 3600s = 72000 m

1s × 3600s = 3600 s

Speed = 72000 m/3600s

Since 1km = 1000m, we have to

72000÷1000= 72km

3600s= 1h

Speed = km/h

Speed = 72km/h

Answer 2

Answer:

time=distance/speed=450/20=22.5min

1 min=60 sec

hence,22 min =22×60=1320sec+5sec

hence,time taken is 1325sec

Explanation:

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