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what is friction?

pa help po @guintoallen11 please


Sagot :

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Friction

    Friction unlike gravity is a force between two bodies which are in contact with each other. It stops an object from sliding against a surface or another object by acting in the opposite direction of the sliding movement. Take for example, a moving car. When the driver wants to stop the car, he or she steps on the brakes. The brakes apply force on tires causing friction to slow down and stop the tires.

    Look at the stack of coins. Each coins “sticks” to the one beneath and the one above it because of friction. This is why the stack stays upright. When you try to slowly push a coin out of the stack, the coin will slightly pull the stack along too. The ridges on each coin also “interlock” with each other, helping to prevent the coin from easily sliding off the stack.