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speedometer for bullets

this is a fairly accurate speedometer for cannonballs or other projectiles (arrows do not work).
It can measure values from 333 m/s to 1000 m/s.

A bullet from a x10 cannon is 500 m/s fast.
If the speedometer shows a wrong value for this you can calibrate it by adjusting the time until it shows the correct value and make sure your game does not lag.
On my PC its 115% at 60fps

Us zero G for optimal values

Have fun!