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Starting from rest, a car accelerates at a rate of 4.2 m/s2 for a time of 5 seconds, What is its velocity at the end of this time?

Respuesta :

janak1610

initial velocity=0m/s

acceleration=4.2m/s^2

time taken =5s

then final velocity

v=u+at

or, v=0+4.2*5

so final velocity is 21m/s

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