2/110 For the pinball game of Prob. 2/109, if the plunger imparts an initial speed of 3 m/s to the ball at time t = 0, determine the acceleration a

of the ball (a) at time t = 0.08 s and (b) at time t = 0.20 s. At point F,the speed of the pinball has decreased by 10% from the initial value, and this decrease may be assumed to occur uniformly over the total distance traveled by the pinball. Use the values r= 150 mm and e = 60°.