A 0.5 kg cart starts from rest at the top of a ramp that is at...

Question

Question

A 0.5 kg cart starts from rest at the top of a ramp that is at 30 degrees above the horizontal. At the bottom of the ramp is another 0.75 kg cart at rest. The 0.5 kg cart rolls down the ramp and collides with the 0.75 cart after which they become stuck together and move along the level ground at a speed of 3.1 m/s. At what height did the 0.5 kg cart start from? (Neglect friction)

Answer 1

Answer #1

use conservation of energy at bottom and top than after use momentum conservation

Answer 2

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