# What is a force?

May 29, 2018

A force is a push or a pull.

#### Explanation:

A force is a push or a pull and the strength of that push or pull is given the units N (Newtons). If there is more than one force acting on a mass, the acceleration is given by Newton's 2nd Law:

${F}_{\text{net}} = m \cdot a$

where ${F}_{\text{net}}$ is the sum of the existing forces. The sum is formed using "vector algebra".

Notice that since Isaac Newton developed the above law, the unit given to the magnitude of a force is also named for him.

I hope this helps,
Steve