Forces Review

Front

What does Newton's third law state?

Back

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

Front

What unit is used to measure weight and force?

Back

Newtons (N)

Front

What happens to an object when the forces acting on it are balanced?

Back

The object remains stationary or continues to move at a constant velocity.

Front

What is the 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

What is the second law of motion?

Back

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

Front

What is the difference between mass and weight?

Back

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

Front

What is an unbalanced force?

Back

A force that causes an object to accelerate or change its motion.

Front

What is an example of Newton's first law?

Back

A basketball sitting motionless in a gym.

Front

What is an example of Newton's second law?

Back

Pushing a car; the harder you push (more force), the faster it accelerates.

Front

What is inertia?

Back

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