Question

a train moving with velocity of 54km/h is accelerated so that its velocity becames 72km/h in 15 seconds find the acceleration of the train

Answer 1

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Acceleration =  change in the velocity / time 

A= 72 - 54 / 15
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A= 18 /15
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A= 1.2 m/s²
________________________________________________________________________________________Hope you get it ; ]

Answer 2

Given that

Change of Velocity => 54km/h - 72km/h
Time => 15 second

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We Know that
Acceleration = Change the velocity / time

= 72- 54 /15
= 18/15
= 1.2m/s²

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15/05/2017
MANISHNAVIK1