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Physics

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A 2.2 kg otter starts from rest at the top of a muddy incline 93.9 cm long and slides down to the bottom in 0.60 s.
What net external force acts on the otter along the incline?
Answer in units of N

It requires a number answer but it makes no sense to me. How should I set this up?

  • Physics -

    s=at²/2
    a=2s/t²=2•0.939/0.6²=5.22 m/s²
    F=ma=2.2•5.22=11.484 N

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