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OpenStudy (anonymous):
PLEASE HELP!!!!!! MEDAL TO RIGHT ANSWER! Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. A rocket is launched from atop a 76-foot cliff with an initial velocity of 135 ft/s. A.) Substitute the values into the vertical motion formula h=-16t^2+vt+c. Let h=0 B.) Use the quadratic formula find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second. 1.)0= -16t^2 + 135t + 76; 0.5 s 2.)0= -16t^2 + 135t + 76; 9 s
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