Question

A vehicle starts from rest and attains a velocity of 40m/s in 5 sec. What will be its acceleration?
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Answer 1

Explanation:

Its initial velocity is zero. Its velocity after 5 seconds is 40 m s −¹

.

Time taken by it to change its velocity from zero to 40 m s −¹

-1 is five seconds.

Therefore the rate of change of velocity = 40/5=8ms −²

accleration = 8ms −²