Forces Test

What is the measure of force?

• Newtons

• Light years

• Inches

• Gallons

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

What is the NET FORCE of this diagram?

• 17 N, right

• 17 N, left

• 23 N, right

• 12 N, up

8 N to the left , and 4 N to the right. Find the net force. Is this balanced 

• 12 N Right  No
• 4 N Left  No
• 12 N Right  Yes
• 4 N Left  Yes

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

The down-arrow in this diagram is most-likely:

• gravity

• normal

• a push or pull

• friction

If this object were moving right, the left-arrow in this diagram is most-likely:

• gravity

• normal

• a push or pull

• friction

A 31-kg mass is accelerated by a net force of 81 N. What is the acceleration of the mass?

• 2.6 m/s²

• 10 m/s²

• 0.39 m/s²

• 0.25 m/s²

• 4 m/s²

If an object has a large mass, it needs a stronger force to make it accelerate. Which law of motion does this describe?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

Pushing a child on a swing is easier than pushing an adult on the same swing would be an example of which law of motion?

• 1st Law

• 2nd Law

• 3rd Law