physical science

A horizontal force of 100 N is required to push a box across the floor at a constant velocity.

a) Show that the net force acting on the box is zero.

b) Show that the friction force that acts on the box is 100 N.

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  1. a. Fap-Ff = m*a = m*0
    Fap - Ff = 0
    The velocity is constant. Therefore,
    the acceleration is zero.
    Fap = Force applied.
    Ff = Force of friction.

    b. Fap - Ff = 0
    100 - Ff = 0
    Ff = 100 N.

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