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A ball is dropped from a height of 64 feet. It's height, in feet, can be modeled by the function h(t)= -16t *power of 2* + 64, where t is the time in seconds since the all was dropped. After how many seconds will the ball hit the ground ?

User Mossab
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2 seconds because t=(64/16)^(1/2)
User Joe Fitter
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