What is friction?
Q: What is friction?
A: Friction is a force that acts to stop the movement of two touching things.
Q: How is the energy lost to friction turned?
A: The energy lost to friction is turned into sound and heat.
Q: What are the two kinds of friction?
A: The two kinds of friction are static and kinetic.
Q: What is static friction?
A: Static friction is when the friction is strong enough to stop movement between two objects.
Q: What is kinetic friction used for?
A: Kinetic friction is used when the frictional force is not strong enough to stop all motion.
Q: What is an effect of kinetic friction?
A: An effect of kinetic friction is heat production.
Q: What are some everyday mechanisms that use friction?
A: Many everyday mechanisms that use friction include car brakes, suitcases, and shoes. Even a person sliding across the floor uses a form of friction.
