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March 25, 2017

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Joshua has a mass of 60kg and stands next to a wall ona frictionless skateboard. If he pushes the wall with a force of 30N, how hard does the wall push on him? Show that Joshua accelerates at .5 m/s2 away from the wall.

  • Physics - ,

    Third law - the wall pushes back with 30N.

    F = m a

    a = F/m = 30N/60kg = 0.5m/s^2

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