Newton's Third Law Concepts

What is the main principle of Newton's Third Law of Motion?

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

• For every action, there is a greater reaction.

• For every action, there is no reaction.

• For every action, there is a similar reaction.

Which of the following is an example of an action-reaction force pair?

• A swimmer pushing water and the water pushing back.

• A car accelerating on a straight road.

• A ball rolling down a hill.

• A person sitting on a chair.

How does a rocket move in space according to Newton's Third Law?

• By expelling exhaust gases in one direction, causing the rocket to move in the opposite direction.

• By using air resistance to propel itself forward.

• By pushing against the vacuum of space.

• By using gravitational pull from nearby planets.

What happens when a person pushes a box according to Newton's Third Law?

• The box pushes back with an equal force in the opposite direction.

• The box moves without any resistance.

• The box absorbs the force completely.

• The box exerts a greater force back.

Why is understanding action-reaction force pairs important in engineering?

• It helps in designing efficient systems and solving complex engineering problems.

• It allows engineers to ignore friction in their calculations.

• It provides a way to create perpetual motion machines.

• It helps in reducing the weight of structures.