I made a Lego Ballista with my dad from physics workshop
we did an experiment to see which angle it shot the farthest from and we found out that at the angle 45°
as you can see at the graph i made below. it started from 0° got higher and higher until it reached 45° then it got lower and lower and it ended at 90°. at the bottom you can see a P3 that means power three we were shooting at power three . at 80° it goes farther if you shoot it at P5 then at P3 56°.
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