Newton III

If one object exerts a force on another object, then the second object exerts a force of equal strength and opposite direction on the first object.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

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the amount of force that is equal in strength and opposite in direction to the action force, which acts simultaneously on whatever is exerting the action force.

• Reaction

• Momentum

• Inertia

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When you are running. your foot exerts force on the ground and the ground exerts force back onto you. Which of Newton's laws is represented

• 1st

• 2nd

• 3rd

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Which of Newton’s Laws explains a rocket’s movement during launch?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Fourth Law of Motion

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

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

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Lauren and Riley are discussing Newton's Third Law. Can you help them by choosing the correct statement?

• An object in motion stays in motion.

• The acceleration of an object is proportional to the net force acting on it.

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

• The force of gravity is inversely proportional to the square of the distance.

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A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

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

• Every mass exerts a force on every other mass.

• An object at rest tends to stay at rest.

• Friction opposes the motion of an object.

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When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?

• The cannon moving forward

• The cannon moving backwards

• The cannonball moving backwards

• The cannonball moving forward

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Which of the following scenarios is an example of Newton's Third Law of Motion?

• A ball rolling down a hill speeds up.

• A book resting on a table.

• A rocket launching into space.

• An apple falling from a tree.

A student throws a ball against a wall.  Which statement best explains what is happening in the picture.

• The energy of the ball is destroyed as it strikes the wall.

• The energy of the ball becomes negative as it hits the wall.

• The force from the wall on the ball is equal and opposite to the force from the ball on the wall.

• The force exerted by the ball on the wall is greater than the force exerted by the wall on the ball.

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