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EXAMPLE 2.23: The velocity-time graph of a ball of mass 20 g movingalong a stralght line on a long table is given in the adjoining figure. 2How-múch force does the table exert on the ball to bring it to rest?20INCERT Solved Example, CCE 2011]SOLUTION: From the given graph, we observe that the initial velocity of theball, u = 20 cm s-1 = 0.20 m s-1, final velocity of the ball, v = 0 after a time,10-r 10 s. As the velocity-time graph is a straight line, the ball is slowing downwith a constant negative acceleration having a value→Time is)Fig. 2.29v-u0-0.20100.02 m s2ma and mass of the ball, m: 20g # 002 kgForce exerted on the ball, FForce, F ma- 0.02 x (-0.0

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