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Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown below.

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Velocity versus time graph of a ball of mass 50 g rolling on a concrete floor is shown below. Calculate the acceleration and the frictional force of the floor on the ball?

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Acceleration =  v - u / t = 80 – 0 / 8 = 10 ms-2

Force = m a×= 50 /1000 x 10 = 0.5 N

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