A person standing on a railway platform noticed that a train took 21 secs to completely pass through the platform which was 84m long and it took 9 seconds in passing him. find the speed of the train in km/hr
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1
hey your answer is 7 m/s
use the relative motion's concept
use the relative motion's concept
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2
Answer:
ans is 66meters
Step-by-step explanation:
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