Unit 6 Vocab Flashcard

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object in motion tends to stay in motion unless acted on by an opposite force.

Front

Which ball has more inertia: a 300kg ball or a 30kg ball?

Back

The 300kg ball has more inertia because it has more mass.

Front

What happens when two forces acting on an object are balanced?

Back

When two forces are balanced, they cause no change in the motion of the object.

Front

Give an example of balanced forces.

Back

A book resting on a table is an example of balanced forces.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its motion.

Front

What is the relationship between mass and inertia?

Back

The greater the mass of an object, the greater its inertia.

Front

What does it mean for forces to be equal but opposite?

Back

Equal but opposite forces are forces that are the same in size but act in opposite directions, resulting in no change in motion.

Front

What is an example of an unbalanced force?

Back

A car accelerating on a highway is an example of an unbalanced force.

Front

What is the effect of an unbalanced force on an object?

Back

An unbalanced force causes an object to accelerate, decelerate, or change direction.

Front

What is Newton's Third Law of Motion?

Back

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