Newton's Third Law

What is Newton's third law?

• An object at rest will remain at rest unless acted upon by a force.
• For every action, there is an equal and opposite reaction.
• Every action has no effect on the opposite side.
• For every action, there is a proportional reaction.

Tags

NGSS.MS-PS2-1

What are force pairs called?

• Energy interactions
• Momentum pairs
• Action-reaction pairs
• Force vectors

Tags

NGSS.MS-PS2-1

What is normal force?

• Normal force is the force that acts parallel to the surface of an object.
• Normal force is the gravitational force acting on an object.
• Normal force is the frictional force opposing motion on a surface.
• Normal force is the perpendicular force exerted by a surface on an object in contact with it.

What does tension mean in latin?

• Crush

• Stretch

• Pull

• Gravity

Which of the following could NOT produce tension?

• A piece of string
• A solid block of wood
• A rope

• A metal cable

Tension in a rope must equal what?

• The force exerted by the weight on the rope.

• The length of the rope.
• The weight of the rope.
• The material of the rope.

Tags

NGSS.HS-PS2-1

What is the symbol for tension?

• F
• T
• P
• R

How much tension is on the rope holding a 10 kg mass?

• 50 N
• 120 N
• 75 N
• 98 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

You sit in a chair. You push the chair down. What is the reaction force?

• Gravity pushes the chair up.

• The chair pushes you down.

• The chair pushes you up.

When you push on a wall, the wall pushes on you.

• True

• False

Tags

NGSS.MS-PS2-1