47. We adopt the positive direction choices used in the textbook so that equations such as Eq. 4-22 are directly applicable. The coordinate origin is at ground level directly below impact point between bat and ball. The Hintgiven in the problem is important, since it provides us with enough information to find v0directly from Eq. 4-26. (a) We want to know how high the ball is from the ground when it is at x= 97.5 m, which requires knowing the initial velocity. Using the range information and
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