How does friction affect moving objects?

Answer 1

Friction affects the acceleration of an object by resisting the movement between the two surfaces which are in contact. For example: Take a piece of ice and slide it across your counter, now take a eraser and do the same thing. Which one went faster and further? The reason is because the eraser has more friction against the counter, which makes the eraser not slide as smoothly as the ice did. This rubbing together of the objects can also creates kinetic energies like static electricity and heat. Think about the last time you had rubbed your hands together for warmth when you are cold. Congratulations, you are using friction to create heat with your hands! How about you rubbing your wool socks on a rug and shocking somebody? Once again, you just used friction by rubbing your wool socks on a rug. Without friction, nothing would stop moving. Brakes would not work, nothing would stay on objects, you would not be able to write, you would not even be able to walk without sliding all over the place. Everything would be like it was in an ice rink. Friction is a valuable thing and helps out a lot in our everyday lives.

Answer 2

Gravity, near the surface of the earth, will cause a downward acceleration of 9.81 metres/second2. Friction will act in the upward direction and cause a retardation in the fall. Its magnitude will depend on the interaction between the falling body and the substance causing the friction.

Answer 3

the more of both and the less speed and the less of both the faster the speed

Answer 4

Friction is a force always acts in the opposite direction to the motion of a body. So it always tries to retard and stop the moving object.

Answer 5

Gravity pulls the object to the center of the earth.