# science

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A man moves on his bike with 54km/h and takes u- tune (180 degree)and continues it speed to move with same speed .the time of u-tune is 10sec.find its average accleration

• science -

r = 54km/h = 54000m/3600s = 15m/s.

a = (V-Vo)/t = (-15-15)/10 = -30/10=-3.0
m/s^2.

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