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March 28, 2015

March 28, 2015

Posted by **Lisa** on Thursday, March 13, 2008 at 10:17pm.

- Physics kinematics -
**Damon**, Thursday, March 13, 2008 at 10:50pmtime to top = 4.5/2 = 2.25 seconds

vertical velocity v = Vo + a t

at top v = 0

0 = Vo - 9.8 (time to top)

Vo = 9.8 (2.25)

Vo = 22.05

sin 63 = 22.05/speed

speed = 22.05/ .891

=24.7

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