The height, h, in feet, of a baseball above the ground t seconds after it is hit is given by $h = - 16 t ^ { 2 } + 80 t + 2.5.$ Use this equation to determine the number of seconds, to the nearest tenth of a second, from the time the ball is hit until the ball hits the ground.
A)4.7 s
B)4.8 s
C)4.9 s
D)5.0 s
E)5.1 s

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The Answer of The height, h, in feet, of a baseball above the ground t seconds after it is hit is given by $h = - 16 t ^ { 2 } + 80 t + 2.5.$ Use this equation to determine the number of seconds, to the nearest tenth of a second, from the time the ball is hit until the ball hits the ground.
A)4.7 s
B)4.8 s
C)4.9 s
D)5.0 s
E)5.1 s

The Height, H, in Feet, of a Baseball Above the Ground