1.1 What is friction? Take this everyday example: when a coffee mug rests on a flat table, the kinetic frictional force is zero. There is no force trying to move the mug across the table, so there is ...

For example, when a bike applies its brakes and slows down the kinetic energy of the bike is transformed into heat energy in the brakes. How much energy is lost depends on the frictional force ...

For example, when a bike applies its brakes and slows down the kinetic energy of the bike is transferred into heat energy in the brakes. How much energy is lost depends on the frictional force ...