A ball is thrown directly upward from the edge of a cliff and travels in such a way that t seconds later, its height ( in feet) above the ground at the base of the cliff isa. Compute the limit to find the instantaneous velocity of the ball at time t b. What is the ball's initial velocity? c. When does the ball hit the ground, and what is its impact velocity? d. When does the ball have velocity 0? What physical interpretation should be given to this time?
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