Understanding Newton's Third Law

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

An object in motion stays in motion unless acted upon by an external force.

Force equals mass times acceleration.

Energy cannot be created or destroyed.

A car accelerating on a highway.

A person jumping off the ground.

A ball rolling down a hill.

A book resting on a table.

Friction acts in the same direction as the object's movement.

Friction acts in the opposite direction of the object's movement.

Friction does not affect Newton's Third Law.

Friction only occurs in the absence of other forces.

The ball exerts a force on the Earth, and the Earth exerts an equal and opposite force on the ball.

The ball exerts a force on the Earth, but the Earth does not exert any force on the ball.

The Earth exerts a force on the ball, but the ball does not exert any force on the Earth.

The ball and the Earth exert forces on each other, but they are not equal.

Because the Earth's mass is so large compared to the ball.

Because the forces are not actually equal and opposite.

Because gravity only acts on the ball.

Because the ball's force is too weak to affect the Earth.