High School Physics/Index of physics equations

Index of useful physics equations

Classical mechanics (movement)

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

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

Kinetic and potential energy

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

Waves

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

Electromagnetics (electricity)

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