A ball is thrown directly upward at a speed of 64 feet per second from a cliff 80 feet above the ground.(a) Find expressions for the velocity and height of the ball t seconds after it was released.(b) At what time does the ball reach its highest point? How high above the ground at the base of the cliff does it reach?
(c) When does the ball strike the ground at the base of the cliff? What is its velocity at that instant?

Question

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The Answer of A ball is thrown directly upward at a speed of 64 feet per second from a cliff 80 feet above the ground.(a) Find expressions for the velocity and height of the ball t seconds after it was released.(b) At what time does the ball reach its highest point? How high above the ground at the base of the cliff does it reach?
(c) When does the ball strike the ground at the base of the cliff? What is its velocity at that instant?

A Ball Is Thrown Directly Upward at a Speed of 64