Question

a bus starting from rest attains a velocity of 54km/h in 5 sec. find the acceleration and displacement of the bus during this time.

Answer 1

v = u + at
here u = 0 , v = 54km/h = 54×1000/3600 = 54×5/18 = 15m/s
15 = 0 + a×5
5a = 15 ,
a = 3m/s^2

Answer 2

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