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metro train starts from rest and in five...

metro train starts from rest and in five seconds achieves a speed 108 km/h. After that it moves with constant velocity and comes to rest after travelling 45m with uniform retardation. If total distance travelled is 395 m, find total time of travelling.

A

12.2s

B

15.3s

C

9s

D

17.2s

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The correct Answer is:
D
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DISHA PUBLICATION-MOTION IN A STRAIGHT LINE-Exercise-1
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