The height, in feet, after x seconds of an object launched straight up can be found by the function h(x)=−16x2+v0x+h0, where v0 is the initial velocity of the object and h0 is the initial height.

a ball is kicked straight up into the air from a height of 12 ft with an initial velocity of 44 ft/s. after how many seconds does the ball hit the ground?

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