Question

What is friction???
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Answer 1

• Frictional force is a contact force that acts in the opposite direction to the motion of an object. This force can cause objects in motion to come to rest, as they act in the opposite direction to its motion.

• E.g. - If you roll a ball on a surface, it would come to rest after a short while.

Answer 2

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult.

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult.Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.

Friction is a force between two surfaces that are sliding, or trying to slide, across each other. For example, when you try to push a book along the floor, friction makes this difficult.Friction always works in the direction opposite to the direction in which the object is moving, or trying to move. Friction always slows a moving object down.The amount of friction depends on the materials from which the two surfaces are made. The rougher the surface, the more friction is produced. Friction also produces heat. If you rub your hands together quickly, you will feel them get warmer.