Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Types of Friction
Transcript of Types of Friction
According to Newton's second law, if the acceleration is zero (the object isn't moving), then the net force applied is zero.
The force that can cancel your push when you are trying to move an object is static friction.
Sliding friction is the force that opposes the motion of two surfaces sliding past each other.
This is caused by microwelds constantly breaking and then forming again as the box slides along the floor. To keep a box moving, you must continually apply force.
The friction between a rolling object and the surface it rolls on is rolling friction.
Rolling friction is due partly to the microwelds between two surfaces. Rolling friction is usually much less than static friction or sliding friction.
Whenever you drop something, air resistance acts on it. The amount of air resistance on an object depends on the speed, size, and shape of the object.
Air resistance, not the amount of mass in the object, is why feathers fall more slowly than apples.