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Posted by on Monday, September 5, 2011 at 11:32pm.

A child traveling 5m/s on a sled passes her younger brother.if her average acceleration on the sledding hill is 2m/s,how fast is she traveling when she passes her older brother 4s later.

  • Physics - , Wednesday, September 7, 2011 at 7:49pm

    Vf = Vo + at,
    Vf = 5 + 2*4 = 13m/s.

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