Please help! I have PreACT's in the morning This is my review!
The equation shows the height of a person launched from a cannon over time. What is the initial height? What is the initial velocity?
Answers
Answered by
3
5.0
When the ball hits the ground, h=0
⇒−4.9t
2
+25t=0
⇒4.9t
2
=25t
⇒t=0 or 4.9t=25=>t is approximately equal to 5
Thus, after 5 seconds, the ball hits the ground.
Similar questions