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Physics. PLEASE HELP!!

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A 22 kg girl slides down a playground slide that is 3.6 m high. When she reaches the bottom of the slide, her speed is 1.7 m/s.
The acceleration of gravity is 9.81 m/s2. How much energy was dissipated by fric-tion?
Answer in units of J

  • Physics. PLEASE HELP!! -

    (P.E. loss) - (K.E. gain)
    = M*(g*H - Vfinal^2/2]
    = _____ J

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