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suppose you exert 150N on your refrigerator and push it across the kitchen floor at constant velocity.
a. is the friction force equal and opposite to your 150N push? explain
b. does the friction force make up the reaction force to your push?

  • physics - ,

    at constant velocity? No net force.

    Netforce= mass*acceleration
    pushing force-frictioin= ma

    but at constant velocity, a=0, so
    pushing force=friction force.

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