Mathematics, 26.08.2019 11:30 GiselNeedsHelp101

Afirecracker shoots up from a hill 140 feet high with an initial speed of 100 feet per second. using the formula h(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?
5 seconds
7 seconds
9 seconds
11 seconds

Answers: 2

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Afirecracker shoots up from a hill 140 feet high with an initial speed of 100 feet per second. using the formula h(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground? 5 seconds 7 seconds 9 seconds 11 seconds

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Questions in other subjects:

Afirecracker shoots up from a hill 140 feet high with an initial speed of 100 feet per second. using the formula h(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?
5 seconds
7 seconds
9 seconds
11 seconds