SOLUTION: How do I solve this problem, please? An angry construction worker throws his wrench downward from a height of 128 feet with an initial velocity of 32 feet per second. The heig

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Question 293016: How do I solve this problem, please?
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)=-16t^2-32t+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.

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
a) plug in 1 for t and solve s(1)=80
b) plug in 0 for s(t) and solve for the zeros. t=2