Dropped and shot balls hit bench simultaneously.

Horizontal Projection: Dropped and Shot Balls. Pull on the ring to trigger the spring gun. Support Rod Rod used to cock the spring gun. This device projects a ball horizonally from the same height as a second ball released simultaneously and allowed to fall vertically. Both balls are observed to strike the lecture table at the same time.
UCB Index: 
A+50+0
PIRA Index: 
1D60.20
Demo Diagram: 

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