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December 20, 2014

December 20, 2014

Posted by **Casey** on Monday, January 3, 2011 at 10:11pm.

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?

- math -
**Reiny**, Monday, January 3, 2011 at 10:28pma) replace t with 1

b) solve

-16t^2 - 32t + 128 = 0

or , after dividing all terms by -16,

t^2 + 2t - 8 = 0

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