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A car with uniform acceleration of 4.0 m / s, how long does it take to...

A car with uniform acceleration of 4.0 m / s, how long does it take to get 80 km / h, starting from rest?
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Answer #1

vf = 80 km/h = 22.2 m/s

vf = vi + at

22.2 = 0 + 4t
t= 5.55 sec

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