Answer:
9.4 seconds or 1 second
Step-by-step explanation:
From;
h = ut ± 1/2gt^2
h = 12 feet
g = acceleration due to gravity = 10 m/s^2
u = 26 ft/sec
Since it is an upward motion g is negative
12 = 26t - 5t^2
Hence;
5t^2 - 26t + 12 = 0
Solving the quadratic equation
Considering that the time taken to go up is the same time taken to hit the ground again
t = 2(4.7) seconds or t = 2(0.5) seconds
t = 9.4 seconds or 1 second
