Newton's Laws Flashcard

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

Define net force.

Back

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

Front

What is the formula for calculating acceleration?

Back

Acceleration (a) = Net Force (F) / Mass (m) or a = F/m.

Front

What happens to the acceleration of an object if the net force is doubled while its mass remains constant?

Back

The acceleration will also double.

Front

Explain the concept of inertia.

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

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.

Front

If a 50 kg box is pushed with a net force of 4 N, what is its acceleration?

Back

0.08 m/s².

Front

What is the relationship between mass and acceleration when force is constant?

Back

As mass increases, acceleration decreases, and vice versa, when the net force is constant.

Front

What is Newton's Third Law of Motion?

Back

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

Front

Why do passengers lurch forward in a car that suddenly stops?

Back

Because their bodies continue moving forward due to inertia until acted upon by another force (the dashboard).