Posted by **kia** on Sunday, February 20, 2011 at 6:07am.

A boy can throw a ball a maximum horizontal distance of R on a level field. How far can he throw the same ball vertically upward? Assume that his muscles give the ball the same speed in each case. (Use R and g as appropriate in your equation.)

- physics -
**drwls**, Sunday, February 20, 2011 at 8:21am
At the optimimum angle (for distance) of 45 degrees, the distance (range) that the ball travels is

R = (V^2)/g

At the optimum angle (for height) of 90 degrees, the maximum vertical height of the ball is

Y = V^2/(2g) = R/2

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