Question: An object is projected directly upward from the ground with an initial velocity of 128 feet per second. Its height s at the end of

An object is projected directly upward from the ground with an initial velocity of 128 feet per second. Its height s at the end of /seconds is s = 1281 - 16t2 feet.
(a) When does it reach its maximum height and what is this height?
(b) When does it hit the ground and with what velocity?

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