physics

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A horizontal force of 20 N acted on a 10 kg mass at rest. The force accelerated the mass over a rough surface so that the mass had a speed of 6.0 m/s after 5.0 seconds. How much friction was acting on the mass?

  • physics -

    Net force=ma
    (20N-frictionforce)=10kg*6/5
    solve for friction force

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