A golf ball is struck at ground level. The speed of the golf ball as a function of the time is shown in Fig. 4-40, where t = 0 at the instant the ball is struck.(a) How far does the golf ball travel horizontally before returning to ground level?(b) What is the maximum height above ground level attained by theball?

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31 29 27 E 25 23 (8/11) A 21 19 0 1 2 3 4 t(s)