Physics, 26.01.2020 08:31 kukisbae

Afirecracker shoots up from a hill 160 feet high with an initial speed of 90 feet per second. using the formula h(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?

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Afirecracker shoots up from a hill 160 feet high with an initial speed of 90 feet per second. using...