SCI Force Module 3 (D.E. 5th)

What is a NON-CONTACT force?

• A push or pull force where the objects are not touching

• A push force where the objects are touching.

• An example would be pulling open a door.

• The only type of force that exists in the world.

What is the difference between MASS and WEIGHT?

• Mass DOES NOT change if the force of gravity changes. Weight DOES change if the force of gravity changes.

• Mass DOES change if the force of gravity changes. Weight DOES NOT change if the force of gravity changes.

• Mass is related to gravity while weight is not.

• If an object is SMALLER, it always has more mass and less weight than a LARGER object.

A contact force is:

• objects physically touching

• far apart objects

• objects not touching

• always a pull

The three examples pictured are of

• non-contact forces

• contact forces

The force between the phone and the mount is a

• non-contact force

• contact force