Forces and Motion - review

A contact force is from

• objects physically touching

• far apart objects

• not touching object

• always a pull

The three examples pictured are of

• Non-contact Forces

• Contact Forces

The force between the phone and the mount is a

• contact force

• non-contact force

Which is an example of a non-contact force?

• elastic force

• normal force

• applied force

• electric force

Air Resistance Force

• Contact Force

• Non-Contact Force

What is the net force?

• 5 N
• 45 N to the left
• 5 N to the right
• 45 N to the right

Which one is balanced?

• top
• bottom
• both

Is it BALANCED? 

• Yes
• No

What is the unit for FORCE? 

• N (Newtons)
• lbs (pounds)
• g (grams)
• m/s (meters per second)

If there are two forces going in the SAME direction, you would ...?

• (-) Subtract the forces
• (+) Add the forces
• Neither
• (x) Multiply