The time taken for the ball to reach 7 feet above the ground is 0.5 s.
Time of the ball's motion
The time taken for the ball to travel the given distance is calculated as follows;
h = -16t² + 16t + 3
Time to reach 7 ft
7 = -16t² + 16t + 3
0 = -16t² + 16t - 4
divide through by 4
0 = -4t² + 4t - 1
solve using formula method,
a = -4, b = 4, c = -1
t = 0.5 s
Thus, the time taken for the ball to reach 7 feet above the ground is 0.5 s.
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