Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
The frictional force does not depend on mass or surface area. All that really matters is the types of materials that are in contact. ... The coefficient is a number usually between zero and one; the higher the number, the stronger the friction.
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Answer:
Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
Explanation:
Answer:
The frictional force does not depend on mass or surface area. All that really matters is the types of materials that are in contact. ... The coefficient is a number usually between zero and one; the higher the number, the stronger the friction.