Force & Motion Flashcard (6.7ABC)

Front

What does Newton's third law of motion state?

Back

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

Front

How does Newton's third law apply when jumping off a boat?

Back

The boat moves backward as you jump forward.

Front

What is the definition of normal force?

Back

The support force exerted upon an object that is in contact with another stable object.

Front

What is the formula for calculating net force?

Back

Net force = applied force - frictional force.

Front

If a person pushes a box with a force of 20 N to the right and friction exerts 15 N to the left, what is the net force?

Back

5 N to the right.

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 on an object.

Front

What is an example of a contact force?

Back

Friction.

Front

What is the relationship between mass and weight?

Back

Weight is directly proportional to mass; as mass increases, weight increases.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object, reducing its speed or stopping it.