Newton's 3rd Law of Motion

Front

What is Newton's 3rd Law of Motion?

Back

Newton's 3rd Law of Motion states that for every action, there is an equal and opposite reaction.

Front

What does the term 'action-reaction' mean in Newton's 3rd Law?

Back

'Action-reaction' refers to the principle that when one object exerts a force on another, the second object exerts a force of equal magnitude but in the opposite direction.

Front

Give an example of Newton's 3rd Law of Motion in everyday life.

Back

When you jump off a small boat, you push the boat backward as you move forward.

Front

What happens when a tennis ball hits the ground?

Back

The ball exerts a force on the ground, and the ground exerts an equal and opposite force, causing the ball to bounce back.

Front

If a book exerts a force of 5N on a table, what force does the table exert back?

Back

The table exerts a force of 5N back on the book.

Front

How does Newton's 3rd Law apply to swimming?

Back

A swimmer pushes against the pool wall (action), and the wall pushes back, propelling the swimmer forward (reaction).

Front

What is the relationship between mass and force in Newton's 3rd Law?

Back

The mass of the objects does not affect the equality of the forces; they will always be equal and opposite regardless of mass.

Front

What is an example of action-reaction forces in a rocket launch?

Back

The rocket's engines push down on the ground (action), and the ground pushes the rocket upward (reaction).

Front

What is the significance of the phrase 'equal and opposite' in Newton's 3rd Law?

Back

It emphasizes that forces always occur in pairs and that the forces are of the same strength but in opposite directions.

Front

How does Newton's 3rd Law explain the motion of two skaters pushing off each other?

Back

When one skater pushes the other, both skaters experience equal forces in opposite directions, causing them to move away from each other.