Newton's Third Law: Forces in Equal and Opposite Pairs

Why doesn't the man fall through the chair when he sits on it?

• The chair is made of a special material.

• The chair exerts an upward force equal to the man's weight.

• The man is not heavy enough to break the chair.

• The chair is fixed to the ground.

What does Newton's Third Law state about forces?

• Forces between two objects are always unequal.

• Forces only act in one direction.

• Forces between two objects come in equal and opposite pairs.

• Forces do not affect objects at rest.

In the example of a man pushing a box, what are the forces called that act on the man's hands?

• Magnetic forces

• Frictional forces

• Gravitational forces

• Action forces

Which of the following is an example of a non-contact force?

• A fish swimming in water

• Gravitational attraction between Earth and the Moon

• A cannon firing a cannonball

• A man sitting on a chair

How do magnets demonstrate Newton's Third Law?

• They only attract objects made of iron.

• They repel each other with different forces.

• They attract each other with equal and opposite forces.

• They do not exert any force on each other.

What allows a fish to move forward in water according to Newton's Third Law?

• The fish's streamlined body

• The fish's weight

• The water's resistance

• The force exerted by the fish's fins on the water

In the baseball example, what is the force exerted by the ball on the bat?

• 4,000 Newtons

• 3,000 Newtons

• 2,000 Newtons

• 1,500 Newtons