A ball is thrown upward from the top of a building 240 feet tall. The height of the ball is described by the function h(t) = -16t² + 28t + 240, where t is the time in seconds and t = 0 corresponds to the moment the ball is thrown. (a) Determine for which value of t the ball reaches the maximum height and determine this maximum height. 1 t= Σ 8 Max Height: Σ ft (b) Determine when the ball reaches the ground. t= Σ 3 (c) With what velocity does the ball hit the ground? Answer: M ft 8

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