Newton's Laws Study Guide

What is the most common unbalanced force that acts on an object in motion?

• Air resistance

• Gravity

• Friction

• Newton's Laws

What does Newton's Third Law state?

• For every action there is an equal and opposite reaction.

• When masses are the same, the exert the same amount of force.

• An object will not move unless acted on by an unbalanced force.

• F = m x a

How are action/reaction forces at work if an object is not moving?

• If you lean on a wall. The force from your foot pushes against the wall and the wall pushes against your foot.

• This can not happen in the real world. Object must be moving to have an action/reaction force occurring.

• An action force does not move a reaction force.

• When a fan allows a cart to move in the opposite direction.

Which law has a "force pair" involved.

• There are no "force pairs" involved with Newton's Laws.

• Newton's First Law

• Newton's second Law

• Newton's Third Law

A 120 kg skater pushes off from a wall with a force of 200 N. Which formula would be used to solve for this problem?

• acceleration = mass / force

• Mass = force x acceleration

• Force = mass x acceleration

• acceleration = force / mass

A 50 kg skater pushes off from a wall with a force of 200 N. What is the skater’s acceleration?

Solve this problem

• 200 / 50 = 4 m/s²

• 50 / 200 = 4 N

• 200 x 50 = 10,000 m/s²

• 200 / 50 = 4 N

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NGSS.MS-PS2-2

Letting go of a balloon full of air would be an example of which law?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Newton's Fourth Law

What is velocity?

• Newton's First Law

• The amount of force applied to an object

• The displacement of matter

• The speed of something in a given direction

Which of Newton's laws is referred to as "The law of Inertia"

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Newton's Fourth Law

In which direction would this object move and by how much?

• 10 newtons to the left

• 10 newtons to the right.

• 5 newtons to the right

• The object would not move