Newton's Laws of Motion

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 with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is the definition of force?

Back

A push or pull on an object resulting from the object's interaction with another object.

Front

What is the unit of force in the metric system?

Back

Newton (N)

Front

What is friction?

Back

A force that opposes the motion of an object when it is in contact with another object.

Front

What are the three types of friction?

Back

Static friction, sliding (kinetic) friction, and rolling friction.

Front

What is inertia?

Back

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

Front

What is Newton's 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 relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass (Weight = mass × gravity).

Front

What is an example of an unbalanced force?

Back

A person pushing a stationary car; the force applied is greater than the friction opposing it.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object; it remains at rest or continues moving at a constant speed.