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OpenStudy (anonymous):
A firecracker shoots up from a hill 165 feet high with an initial speed of 110 feet per second. Using the formula H(t) = -16t2 + vt + s, determine how long it will take the firecracker to hit the ground.
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OpenStudy (lalaly):
v=110 s=165 fire cracker hits the ground when h(t)=0 so -16t^2+110t+165=0 solve using the quadratic formula... u will get two answers for t one negative and one positive,,, u neglect the negative since time cant be negative
OpenStudy (lalaly):
@gatorgalvet
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