Asked by Casey
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?
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?
Answers
Answered by
Reiny
a) replace t with 1
b) solve
-16t^2 - 32t + 128 = 0
or , after dividing all terms by -16,
t^2 + 2t - 8 = 0
b) solve
-16t^2 - 32t + 128 = 0
or , after dividing all terms by -16,
t^2 + 2t - 8 = 0
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