Third Law of Motion: Action and Reaction

Newton's Third Law of Motion

By gilson granil

Newton’s third law of motion describes how objects interact with each other when a force is applied.

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Look at this Newton's Cradle.​

Remember!

• Forces occur in pairs.

• Forces come in equal strength.​

• Forces come in opposite directions.

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Action Force - the force acting on an object that causes the reaction force​

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Reaction Force - ​the force that acts in the opposite direction to the action force

Multiple Choice

According to Newton's third law forces come in pairs.

• True
• False

Multiple Choice

According to Newton's Third law the strength or magnitude of forces will be...

• smaller
• equal
• larger

Multiple Choice

According to Newton's Third law, the direction of forces will be...

• the same

• opposite

• unknown

The ball strikes the ground PUSHES DOWN on the ground with a certain force.

Action Force

The ground PUSHES BACK UP on the ball with an equal force in the opposite direction. This causes the ball to move away from the ground.

Reaction Force

Multiple Choice

When Kyrie Irving dribbles, he pushes the ball DOWN against the court. In turn, the floor pushes __________ against the ball allowing it to bounce.

• DOWN

• UP

• FORWARD

Multiple Choice

When a bird is flying, their wings are pushing DOWN against the air. In turn, the air pushes __________ against their wings allowing them to fly.

• DOWN

• UP

• FORWARD

Poll

How do you find the lesson today?