# High School Physics/Index of physics equations

Index of useful physics equations

## Classical mechanics (movement)

General Form: $A=B\times C$  use the "algebra pyramid" to rearrange the equation respectively

• $force=mass\times acceleration$
• $weight=mass\times acceleration_{duetogravity}$
• $density={\frac {mass}{volume}}$
• $acceleration={\frac {v_{f}-v_{i}}{t_{f}-t_{i}}}$
• $velocity={\frac {distance}{time}}$
• $distance={\frac {acceleration_{duetogravity}\times time^{2}}{2}}$  (for something that is falling. usually the y component)
• $displacement=Originalvelocity\times time+{\frac {1}{2}}acceleration\times (time^{2})$

## Kinetic and potential energy

• $kineticenergy={\frac {mass\times velocity^{2}}{2}}$
• $potentialenergy=mass\times acceleration_{duetogravity}\times h$
• $momentum=mass\times velocity$
• $I=F\times T$

## Waves

Speed = Distance/Time s = d/t Velocity = Frequency * Lambda v=f*ʎ

## Electromagnetics (electricity)

• $power=voltage\times current$
• $current={\frac {voltage}{resistance}}$