PE gained = KE on impact.
(0.5 + 0.0419)gh = 1/2 * 0.0419 * 18^2
solve for h
To test out your new foam dart blaster, you hang a small cube, size 5cm on a side with mass 0.5 kg, from your ceiling. You then fire a 41.9 gram foam dart at the bottom of it with a speed of 18 m/s, and the dart sticks to the cube. Calculate the height in m that the block will reach relative to where it started.
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