Initial Speed

9/17/2010 11:28:17

   

dj1984
Point: 7
New Member

How do I solve this: "A ball is thrown straight up and reaches a maximum height in 8.64 s. What was its initial speed? The acceleration of gravity is 9.8 m/s2."

9/17/2010 11:48:38

   

dj1984
Point: 7
New Member

I came up w/84.672 m/s... is that right?

9/17/2010 15:3:45

   

Mike
Point: 1300
Senior Member

yes, that is correct