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 at a constant velocity unless acted upon by a net external force.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g). On Earth, g is approximately 9.8 m/s².

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the more inertia it has.

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 = m × a)

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

As mass increases, acceleration decreases if the force remains constant.

Front

What is Newton's Third Law of Motion?

Back

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

Front

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

Back

The unit of force is the Newton (N).

Front

How many forces are acting on a car driving down the road?

Back

There are typically four forces acting on a car: gravitational force, normal force, frictional force, and applied force.

Front

What happens to acceleration when mass increases while force remains constant?

Back

Acceleration decreases.

Front

If an object has a mass of 5.0 kg and accelerates at 8.0 m/s², what is the force applied?

Back

The force applied is 40 N (calculated using F = m × a).