Sagot :
Answer:
Friction is the resistance that occurs when two objects rub against each, causing one or both to come to a halt. The amount of friction between two objects depends on a variety of factors, including the texture, speed, shape, and weight of each object. In some cases, friction can cause objects to heat up. This happens when friction causes kinetic energy to be transformed into heat energy.
Answer:
The amount of friction depends on the force pushing the surfaces together. If this force increases, the hills and valleys of the surfaces can come into closer contact. The close contact increases the friction between the surfaces. Objects that weigh less exert less downward force than objects that weigh more.