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A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3 sec for the ball to reach its maximum height. Find: a) the ball's initial velocity
and b) the height it reaches
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Asked 8/29/2009 3:08:27 PM
Updated 8/29/2009 3:58:56 PM
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a) vo = 0 - (-9.80 m/s^2)(3.00s) = 29.4 m/s. Initial velocity is 29.4 m/s.

b) Find the value of the y coordinate at time t=3.00s.
y - y0 = 0^2 - (29.4 m/s)^2 divided by 2(-9.80 m/s^2) = 44.1m. The ball reached a maximum height of 44.1 m.
Added 8/29/2009 3:58:57 PM
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