nancywani90 nancywani90

19-11-2016
Physics

Answered

A car travelling at 15 m/s increases it's speed to 20 m/s in 10 seconds. its average acceleration is?

Verified Answer :

tibboyz123 tibboyz123

19-11-2016

Ave. acceleration = change in velocity/ time = (vf-vi)/t
vf = final velocity= 20m/s
vi = Initial velocity = 15m/s
t = time = 10sec.
So, the ave. acceleration is = (20 m/s -15 m/s)/10 sec
= 5 m/s / 10 sec
= 1/2 m/s² or 0.5 m/s²

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