Jules kicks a soccer ball off the ground and into the air with an initial velocity of 25 feet per second. Assume the starting height of the ball is 0 feet. Approximately, how long does it take until the soccer ball hits the ground again?

Question

anonymous · Answer

vertically up?

anonymous · Answer

or an an angle of less than 90 degrees with the vertical?

anonymous · Answer

"s" being the displacement = 0
"u" = 25 (initial velocity)
"a" = -9.81 (assuming that it is accelerating constantly)
s=ut - 0.5at^2
0 = 25t - 4.905t^2
t( 25 - 4.905t) = 0
so t = 5.096

So it tkaes 5.096seconds