Unit 1 Newton's Law of Motion

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion, either by accelerating, decelerating, or changing direction.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion of the object.

Front

What is a force?

Back

A force is a push or pull exerted on an object.

Front

What is Newton's 1st Law of Motion?

Back

Newton's 1st Law states that an object at rest will stay at rest, and an object in motion will stay in motion at a constant velocity unless acted upon by an unbalanced force.

Front

What is Newton's 2nd Law of Motion?

Back

Newton's 2nd Law states that 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 Newton's 3rd Law of Motion?

Back

Newton's 3rd Law states that for every action, there is an equal and opposite reaction.

Front

What are the SI units for force?

Back

The SI unit for force is the newton (N).

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object, which can be caused by a change in speed or direction.

Front

How does mass affect acceleration?

Back

According to Newton's 2nd Law, as mass increases, acceleration decreases for a given force.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, acting parallel to the surfaces in contact.