SOLUTION: Gabe drops a hammer from an apartment that is 30 meters above the
ground. The height of the hammer in meters, ℎ, after t seconds is modeled by
the function shown.
ℎ(
Algebra.Com
Question 1057399: Gabe drops a hammer from an apartment that is 30 meters above the
ground. The height of the hammer in meters, ℎ, after t seconds is modeled by
the function shown.
ℎ(t) = −t^2 − 2t + 30
Find the approximate number of seconds it will take for the hammer to hit the
ground. Round your answer to the nearest whole number.
□ 0
□ 5
□ 10
□ 30
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The hammer has to fall 30 m
and the height,
use quadratic formula
( I used the negative square root to make
the time, , come out positive )
The hammer hits the ground in 5 sec
( rounded off )
--------------------------------------
check:
OK -close enough
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