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7. (Potential Energy and Conservation of Energy) A 16.0-kg child de- scends a slide 2.20 m high and, starting from rest, reaches the bottom

7. (Potential Energy and Conservation of Energy) A 16.0-kg child de- scends a slide 2.20 m high and, starting from rest, reaches the bottom with a speed of 1.25 m/s. How much thermal energy due to friction was generated in this process? Answer: Ethermal = 332 J

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