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 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

How does mass relate to inertia?

Back

Objects with greater mass have greater inertia, meaning they are harder to start or stop moving.

Front

What is the formula for calculating force?

Back

Force (F) = Mass (m) × Acceleration (a) or F = m × a.

Front

If a net force of 12 N is applied to a 3 kg object, what is the acceleration?

Back

The acceleration is 4 m/s².

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

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

Back

The unit of force is the Newton (N).

Front

What does a net force of 0 N indicate about an object's motion?

Back

A net force of 0 N indicates that the object is either at rest or moving at a constant velocity.

Front

If a net force of 15 N causes an encyclopedia to accelerate at 5 m/s², what is its mass?

Back

The mass of the encyclopedia is 3.0 kg.

Front

What is the relationship between force, mass, and acceleration?

Back

The relationship is described by Newton's Second Law: F = m × a.