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MTH 209 ---- Throwing a wrench.

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Throwing a wrench. An angry construction worker throws
his wrench downward from a height of 128 feet with an
initial velocity of 32 feet per second. The height of the
wrench above the ground after t seconds is given
by S(t)16t2  32t  128.
a) What is the height of the wrench after 1 second?
b) How long does it take for the wrench to reach the ground?

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