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If a train travelling at 72 km/h is to b...

If a train travelling at 72 km/h is to be brought to rest in a distance of 200m, then its retardation should be:-

A

`20 m//s^(2)`

B

`2m//s^(2)`

C

`10 m//s^(2)`

D

`1 m//s^(2)`

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The correct Answer is:
D
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