Force & Motion Unit 3 REVIEW

Front

What can be said about the forces acting on a car moving at a constant speed on a straight road?

Back

The forces are balanced.

Front

What is the force pair acting between a person sitting on a chair?

Back

The person's weight and the chair's support force.

Front

According to Newton's Third Law of Motion, what happens when you push against a wall?

Back

The wall pushes back with equal force.

Front

What is an example of an unbalanced force?

Back

A person running.

Front

Which force opposes the motion of a sliding object?

Back

Friction.

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.

Front

Define balanced forces.

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What is the definition of unbalanced forces?

Back

Forces that are not equal and opposite, causing a change in motion.

Front

What is the role of friction in motion?

Back

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

Front

What does Newton's Second Law of Motion state?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).