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28 January, 22:07

A car goes forward along a level road at constant velocity. The additional force needed to bring the car into equilibrium is

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  1. 29 January, 00:53
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    Answer: Frictional force

    Explanation:

    Since the body is moving at constant velocity, this means that the acceleration of the body is zero. Frictional force is a force of opposition which tends to oppose the moving force of an object on a flat surface.

    Mathematically, summation of force on the car along the road will be

    Fm - Ff = ma

    Fm = moving force

    Ff = frictional force

    m = mass of the body

    a = acceleration of the body

    Since a = 0, we have;

    Fm - Ff = 0

    Fm = Ff (which shows that the two forces acting on the body are equal and opposite)

    This frictional force will tend to keep the body at equilibrium.
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