Asked by Lynn

A roller coaster mass of 291 kg starts stationary at point A where height 1 = 37 m, and a while later is at B, where height 2 = 11.4 m. The acceleration of gravity is 9.8 m/s^2. What is the speed of cart at B ignoring the effect of friction?
Answered by Elena
mgH-mgh= mv²/2
v=sqrt{2g(H-h)} = …
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