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10 February, 05:19

A 50.-Newton horizontal force is needed to keep an object weighing 500. Newtons moving at a constant velocity of 2.0 meters per second across a horizontal surface. The magnitude of the frictional force acting on the object is

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  1. 10 February, 05:34
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    - - "Constant velocity" means the acceleration of the object is zero.

    - - "Zero acceleration" means that all the forces on the object add up to zero.

    - - If a force of 50-newtons is pulling the object in one direction

    and the object's speed is constant, then the frictional force on

    the object must be 50 newtons in the opposite direction.
  2. 10 February, 05:41
    0
    Hope it cleared your doubt.
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Home » Physics » A 50.-Newton horizontal force is needed to keep an object weighing 500. Newtons moving at a constant velocity of 2.0 meters per second across a horizontal surface. The magnitude of the frictional force acting on the object is
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