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Work, Energy, & Conservation of Energy

Practice Problem

  • A roller coaster car of mass m = 400 kg starts from rest at the top of a hill at a height h = 25 m. Ignoring friction and air resistance, use the Law of Conservation of Energy (E_initial = E_final) to find the speed of the car when it reaches ground level (h = 0). Use g = 9.8 m/s^2.

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