Ch.4 Newton's Laws

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 a net external force.

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 Newton's Third Law of Motion?

Back

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

Front

What is a net force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

What does it mean for forces to be balanced?

Back

Balanced forces result in no change in motion; the net force is zero.

Front

What does it mean for forces to be unbalanced?

Back

Unbalanced forces result in a change in motion; the net force is not zero.

Front

What is a free-body diagram?

Back

A graphical representation used to visualize the forces acting on an object.

Front

What is the formula for calculating net force?

Back

Net Force = Total Forces acting in one direction - Total Forces acting in the opposite direction.

Front

What is inertia?

Back

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

Front

How does mass affect acceleration?

Back

Greater mass results in less acceleration for the same amount of force applied.