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 another name for Newton's First Law?

Back

Law of inertia.

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

How do you calculate net force?

Back

Net force is the vector sum of all forces acting on an object.

Front

If a 20 kg bike accelerates at 10 m/s², what is the net force?

Back

200 Newtons.

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a).

Front

If two forces of 20N and 40N act to the left and a force of 50N acts to the right, what is the net force?

Back

10N left.

Front

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

Back

Newton (N).

Front

What does it mean when an object is in equilibrium?

Back

The net force acting on the object is zero, resulting in no acceleration.