Forces of Motion

Front

What is gravitational force?

Back

A noncontact force of attraction between two objects.

Front

What are equal forces?

Back

Forces that have the same strength.

Front

What is an example of an unequal force?

Back

An example is when two objects are pushed with different strengths.

Front

What is an example of an equal force?

Back

An example is when two people push a car with the same amount of force.

Front

What is frictional force?

Back

A contact force that pushes against objects in motion.

Front

What is the difference between contact and noncontact forces?

Back

Contact forces require physical contact between objects, while noncontact forces act at a distance.

Front

What is the role of friction in motion?

Back

Friction opposes the motion of objects, slowing them down or stopping them.

Front

How do balanced forces affect motion?

Back

Balanced forces do not change the motion of an object; the object remains at rest or in constant motion.

Front

What are unbalanced forces?

Back

Forces that cause a change in the motion of an object.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.