The pitcher in a slow-pitch softball game releases the
Chapter , Problem 129(choose chapter or problem)
The pitcher in a slow-pitch softball game releases the ball at a point 3.0 ft above ground level.A stroboscopic plot of the position of the ball is shown in Fig. 4-60, where the readings are 0.25 s apart and the ball is released at t = 0. (a) What is the initial speed of the ball? (b) What is the speed of the ball at the instant it reaches its maximum height above ground level? (c) What is that maximum height? y (ft) 10 5 0 10 20 x (ft) 30 40 t = 0 Figure 4-60 129
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