Physics, asked by Ajmalkhan3377, 11 months ago

what is the speed of a 75m long train which passes a 150m long platform in 10 seconds?
A.60km/hr
B.68 km/hr
C:76km/hr
D:81km/hr​

Answers

Answered by Meghanath777
11

Answer: D. 81 km/hr

Distance travelled by the train in 10 sec = 150 + 75 = 225 m

Speed = distance / time

= (225 / 10)m/s

To convert m/s into km/h, multiply with 18/5.

= (225/10) × (18/5)

= 22.5 × 3.6

= 81 km/h

Answered by xyz1987
1

@Meghanath777 why did we added 150 and 75 ??

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