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View source for The equation $y = -16t^2 + 28t + 144$ describes the height (in feet) of a ball tossed up in the air at $28$ feet per second from a height of $144$ feet from the ground. In how many seconds will the ball hit the ground?

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Return to The equation $y = -16t^2 + 28t + 144$ describes the height (in feet) of a ball tossed up in the air at $28$ feet per second from a height of $144$ feet from the ground. In how many seconds will the ball hit the ground?.

Retrieved from "https://artofproblemsolving.com/wiki/index.php/The_equation_$y_%3D_-16t%5E2_%2B_28t_%2B_144$_describes_the_height_(in_feet)_of_a_ball_tossed_up_in_the_air_at_$28$_feet_per_second_from_a_height_of_$144$_feet_from_the_ground._In_how_many_seconds_will_the_ball_hit_the_ground%3F"