Can friction ever cause an object to speed up?



  1. 0 Votes

    No. Friction is a force that opposed all other forces, including force of movement. The effect of friction will always be to convert non-heat energy into heat energy. Thus, unless the object in question is a molecule, friction will always cause it to slow down.

  2. 0 Votes

    The term friction implies that it is a negative force. The laws of physics require friction to slow an object down and the only way friction could speed an object up is in theoretical and hypothetical physics, not in reality.

  3. 0 Votes

    At its most basic level, friction causes an object to lose energy by converting it to heat.  In this sense, it always causes the object to slow down. 

    However, hybrid cars use a system called “regenerative braking” which converts the energy normally lost through friction back into usable electricity.  The electricity can be stored and used to speed the car up.

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