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## Homework Statement

determine the acute angle (in radians) of appropriate elevation in the throwing of a ball, if the initial velocity is 20 m / s, g=9.81 m/s^2 and the distance in x is 40m. The ball leaves the hand of the pitcher with an elevation equal to 1.8m and the catcher receives it at 1m.

## Homework Equations

3. The Attempt at a Solution [/B]

I tried using the equation above, but then why gives me the values (Yo = 1.8m and Y=1m)?

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