sharon kicks a ball from the ground into the air with an upward velocity of 64 feet per second. the function…

sharon kicks a ball from the ground into the air with an upward velocity of 64 feet per second. the function h = -16t² + 64t models the height h, in feet, of the ball at time t, in seconds. when will the ball reach the ground again? 1 second after the ball is thrown 2 seconds after the ball is thrown 3 seconds after the ball is thrown 4 seconds after the ball is thrown done

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