Posted by luke on Friday, November 19, 2010 at 7:02pm.
if a ball, fired as a projectile, travels 30 meters when it leaves the the ground at 20% angel, it will travel the same distance when fired at an angle of what degrees

physics  drwls, Friday, November 19, 2010 at 7:37pm
Is "20% angel" supposed to be "20 degree angle"? Or is the ball still earning its wings?
I will assume you mean 20 degree angle.
Range = (V^2/g)*sin(2A)
(Try to derive that yourself)
For A = 20 degrees, 2A = 40.
You get the same value for the sine, and the range, when 2X = 140. That means A = 70 degrees.
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