Physics Review

If there are two forces going in the same direction how would you find the net force?

• Subtract
• Add
• Neither
• Multiply

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

With unbalanced forces, the object will move in the direction of the _______ force.

• larger 
• smaller 
• equal 

Force pair that has a net force of zero.

• Balanced force
• Unbalanced force

Which one is balanced?

• top
• bottom
• both
• neither

What is the net force?

• 5000 N right
• 4000 N right
• 40 N left
• 4000 N left

What is the magnitude (size) and direction of the net force?

• 15 N to the left
• 15 N to the right
• 1 N to the left
• 1 N to the right

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates

A 20 kg bike accelerates at 10 m/s².  What was the force?

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons