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UNO [17]
3 years ago
6

An object falls from a height of 400 feet. Its height, h, in feet is given by the equation h=-16t^2+400 , where t is the time in

seconds the object has fallen. How many seconds will it take for the object to reach the ground?
A.
1/5
B.
5
C.
20
D.
25
Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0
16t^2=400
t^2=25
t=5
5 seconds=B
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