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physics

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On his way off to college, Russell drags his bag 15.0 m from the door of his house to the car at a constant speed with a horizontal force of 95.0 N. How much work does Russell do to overcome the force of friction?

  • physics -

    work=force*distance.
    The work he did is the same as work done on friction.

  • physics -

    but the answer in my book is 1430, and i got 1425

  • physics -

    That's probably because of significant figures. 15.0 m and 95.0 N both have three significant figures. Therefore, the answer should also have three significant figures. 1425 rounded to three sigfigs is 1430.

  • physics -

    thanks

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