Newton's Laws

Front

What explains why objects resist changes in their state of motion?

Back

Inertia: The tendency of an object to remain at rest or in uniform motion unless acted upon by an external force.

Front

An inflated balloon released from rest moves horizontally. What law explains this event?

Back

Newton's 3rd Law: For every action, there is an equal and opposite reaction.

Front

What is the combination of all the forces acting on an object called?

Back

Net Force: The overall force acting on an object when all individual forces are combined.

Front

Isaac Newton developed these 3 laws concerning what?

Back

Motion: The change in position of an object over time.

Front

What two measurements are necessary for calculating speed?

Back

Distance and Time: Speed is calculated as distance traveled divided by the time taken.

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by a net external force.

Front

What does Newton's 2nd 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).

Front

What is the definition of force?

Back

Force: A push or pull on an object resulting from its interaction with another object.

Front

What is the unit of force in the International System of Units (SI)?

Back

Newton (N): The force required to accelerate a 1 kg mass by 1 m/s².

Front

What is the difference between mass and weight?

Back

Mass: The amount of matter in an object (measured in kg); Weight: The force of gravity acting on that mass (measured in N).