# Deriving the Laws of Motion

I remember back in high school physics, a lot of my fellow students struggled with memorizing all the equations.

I was never very good at memorizing equations. I found it easier to remember how equations were derived instead.

These are the variables in the equations:

• `t` time an object has been moving.

The first equation is probably the only one which is immediately obvious, so I will concentrate on showing how we arrive at the last two.

Here are the steps for how we arrive at equation number two:

1. We can use this equation of acceleration `a = 0`, meaning the velocity `v` is constant.

We can use the first and second equation for motion to derive the third one.

This steps are just regular algebra so there should be no need to explain them in detail.

My motivation for showing this is to work towards later stories about equations used in rocketry and how to the equations for work and kinetic energy are related.

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## More from Erik Engheim

Geek dad, living in Oslo, Norway with passion for UX, Julia programming, science, teaching, reading and writing. Geek dad, living in Oslo, Norway with passion for UX, Julia programming, science, teaching, reading and writing.