Forces and Motion Review

What is a force? 

• A push or a pull 
• something you eat
• something that doesn't move 

What is a balanced force?

• An object has a net force of 0 and no movement
• An object with a net force greater than 0 and is moving.

What is an unbalanced force?

• An object is NOT moving.
• An object has a net force greater than 0 and IS moving.

What causes the most potential energy?

• Height
• Speed
• mass

What is friction?

• The resistance of two forces rubbing together
• It is a flower. 
• It is a food. 
• It is how fast something goes.

What does Newton's 1st law of motion say? 

• An object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force. 
• F=ma
• For every action there is an equal and opposite reaction.

What does Newton's 2nd law say?

• Force=mass x acceleration
• An object in motion stays in motion unless acted upon by an outside force.
• Intertia makes stuff move. 

What does Newton's third law say? 

• For every action, there is an equal and opposite reaction.
• f=ma
• Intertia is what makes objects move

What is acceleration? 

• A change in speed or direction or both.
• How fast something is going.
• Something standing still

What are examples of "unseen" forces?

• Air resistance, gravity, and friction
• pushing
• Shoving and kicking
• Speed