An object is dropped from a height of 400 feet. The amount of time, in seconds, the object takes to hit the ground can be found
by solving the equation -16t^2+400=0 . How many seconds will it take to hit the ground?
1 answer:
-16t^2+400=0
16t^2=400
take square root on both sides.
4t=20
t=20/4
t=5
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