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44)A ball is tossed up from an 80 foot tower, with an initial velocity of 64...

44)A ball is tossed up from an 80 foot tower, with an initial velocity of 64 ft / sec. The position function is s(t) = 16x2 + 64x + 80.
     (a) How high will the ball be above the ground when t = 1?
     (b) When will the ball reach maximum height above the ground?
     (c) Find the time, t, when the ball strikes the ground.
     (d) Find the velocity of the ball when it strikes the ground.

Math   Calculus   
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