Newton's Law, Force and Energy

This set covers core concepts from the lecture on Newton's laws, focusing on the definition of force, units, vector properties, and balanced forces.

Force

A push or a pull upon an object resulting from the object's interaction with another object.

Universal Principle

Whenever two objects interact, there is a force acting upon each of them.

Newton ($N$)

The standard unit of measurement for force, named after Isaac Newton.

Forces as Vectors

A measurement meaning the quantity has both magnitude and direction.

Magnitude

The strength or size of the force, for example $10\,N$ vs. $50\,N$.

Direction

The specific path along which the force is applied, such as North, Upwards, or to the left.

Balanced forces

Forces that are equal in size (magnitude) but opposite in direction.