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26-04-2016
Mathematics

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A firecracker shoots up from a hill 150 feet high, with an initial speed of 110 feet per second. Using the formula H(t) = −16t2 + vt + s, approximately how long will it take the firecracker to hit the ground?

Eight seconds
Nine seconds
10 seconds
11 seconds

Respuesta :

Аноним Аноним

02-08-2018

I got this right. It takes approximately 8 seconds to touch the ground.

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