what is work against friction?
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Friction is the force that is resisting the motion of an object so it will always point in the opposite direction of that of movement. For example, when an object is sliding on a table it does work against friction . ... Work done by friction is released in the form of heat and that against gravity as potential energy
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The force of gravitation points downwards... you apply a force upwards.
Friction is the force that is resisting the motion of an object so it will always point in the opposite direction of that movement .
For EX: When an object is sliding on a table it does work against friction....
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