Newton's 3rd Law of motion

What is the reaction force when a swimmer pushes off the wall?

• The wall pushes the swimmer forward.

• The swimmer pushes the wall backward.

• The water pushes the swimmer downwards.

• The wall remains stationary.

What is Newton's Third Law also known as?

• The Law of Universal Gravitation

• The Law of Inertia

• The Law of Action-Reaction

• The Law of Conservation of Momentum

What is an action force in the context of a swimmer pushing off the wall?

• The swimmer pushes the wall backward.

• The wall pushes the swimmer forward.

• The swimmer pulls the wall down.

• The water pushes the swimmer upward.

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

• opposite

• similar

• neutral

• random

What does Newton's 3rd Law imply about the interaction between two objects?

• When one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.

• For every action, there is a reaction, but the forces are not equal.

• An object at rest will remain at rest unless acted upon by an unbalanced force.

• The force exerted by one object will always be greater than the force exerted by another object.

What is the standard unit force is measured in?

• Pound

• Kilogram

• Newton

• Joule

What happens to the forces when two objects collide?

• They exert equal and opposite forces on each other.

• One object exerts a greater force than the other.

• The forces cancel each other out completely.

• The objects do not exert any forces on each other.

What is the relationship between action and reaction forces?

• They are always equal in magnitude and opposite in direction.

• They are always unequal in magnitude and opposite in direction.

• They act on the same object and are equal in magnitude.

• They are always in the same direction and equal in magnitude.

How does Newton's 3rd Law explain the flight of a bird?

• The bird flaps its wings to create lift.

• The bird pushes air downwards (action), and the air pushes the bird upwards (reaction).

• The bird uses its tail to steer in the air.

• The bird relies on thermal currents to stay aloft.

What does 'opposite' mean in the context of Newton's 3rd Law?

• It indicates that the forces act in opposite directions.

• It means the forces are equal in magnitude.

• It refers to forces acting at right angles to each other.

• It suggests that forces can cancel each other out.