Collision-in-two-
Dimensions-Apparatus-RVFM-PH10517-P-This-curved-ramp-delivers-a-ball-for-collision-with-constant-energy-allowing-comparisons-to-be-made-using-differing-targets-P-P-The-apparatus-
Includes::-two-12-7mm-frac 12-in-steel-balls-one-12-7mm-frac 12-in-glass-ball-&-one-25-4mm-1in-wooden-plumb-bob-P-Collision-in-two-Dimensional