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Hollsmzstarahb
Hollsmzstarahb Hollsmzstarahb
  • 10-05-2016
  • Mathematics
Answered

If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? (1 point)

1.5 s

3 s

6 s

9 s

Verified Answer :

meerkat18
meerkat18 meerkat18
  • 19-05-2016

h(t) = -16t² + 144

When will the object hit the ground? This means that the height will equal to 0.

h(t) = 0
0 = -16t² + 144
16t² = 144
t² = 144/16
t² = 9
√t² = √9
t = 3

The object will hit the ground after 3 seconds.

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