Forces

Forces

physical science

Forces

• friction and gravity are always acting on us in our everyday lives

• we'll talk about both types of forces on their own later

Net Force

• calculating the net force on an object will help us determine if (and how) an object will move

• we will look at how to read force diagrams next

Multiple Choice

What is a force?

• the PUSH or PULL on an object 
• The MOTION an object creates
• The objects HITTING one another
• Going REALLY FAST

Multiple Choice

What is the net force?

• 17 N Right
• 3 N Right
• 3 N Left
• 17 N Left

Multiple Choice

What is the unit for FORCE? 

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

Multiple Choice

Which one is balanced?

• top
• bottom
• both

Multiple Choice

Is it BALANCED? 

• Yes
• No

Multiple Choice

This is an example of what kind of force?

• Balanced Force
• Pushing Force
• Gravity Force
• Unbalanced Force

Multiple Choice

Which direction will the object move?

• Up
• Down
• Right
• Left

Multiple Choice

If the net force is 0 the object will ... 

• CHANGES motion
• STAY the SAME, NOT Move

Multiple Choice

How do you find the net force of this image.

• Add up all the arrows

• Add a green arrow and the orange arrow.

• Subtract all the arrows.

• Add the green arrows and subtract the orange arrow.

Multiple Choice

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

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

Multiple Choice

If the boy is pulling with a force of 10 N and the girl is pushing with a force 20 N, what is the net force on the box?

• 10 N

• 20 N

• 30 N

• 0 N