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Need help from archery/ siege weapon people? Answered

so im planning to make a ballista for a school project. I haven't learned all that graphing stuff yet, so how do i determine the range of a projectile launched according to it's angle launched, mass of prjectile, and draw weight? i suppose it would go somewhat like

(Mass of projectile) x (n constant) x absolute value of ({angle launched - 45 degrees} x k constant ) x draw weight x g constant

sorry, im not good at math.
would it work if I just flung projectiles and recorded distances and graphed that?
or would I have to calculate each thing seperately?
please help 

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Sandisk1duo
Sandisk1duo

11 years ago

using this equation, you can find the range of a projectile:
R=(v^2^2Sin[angle])/9.8
velocity is measured in m/s