Contact Forces Review

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

What happens when a swimmer pushes back on the water?

Back

The swimmer moves forward due to Newton's 3rd Law.

Front

What is a force?

Back

A push or a pull that can change the motion of an object.

Front

If a force is applied in the same direction as an object's motion, what happens?

Back

The object will speed up.

Front

What happens to Kinetic Energy if you double the speed of an object?

Back

Kinetic Energy will quadruple (increase by a factor of four).

Front

What is the formula for Kinetic Energy?

Back

Kinetic Energy = 1/2 * mass * velocity^2.

Front

What is an example of a contact force?

Back

Friction, tension, and normal force are examples of contact forces.

Front

What is friction?

Back

A force that opposes the motion of an object.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.