Essential Physics Formulas and Unit Conversions
with a size of 2.39 KBMotion and Force Formulas
- Speed = Distance ÷ Time (Distance in m, Time in s)
- Acceleration = Change in velocity ÷ Time (Velocity in m/s, Time in s)
- Force = Mass × Acceleration (Mass in kg, Acceleration in m/s²)
- Weight = Mass × Gravitational field strength (g = 9.8 N/kg)
Density and Energy Equations
- Density = Mass ÷ Volume (Mass in kg, Volume in m³)
- Kinetic Energy (KE) = ½ × Mass × Speed² (Mass in kg, Speed in m/s)
- Gravitational Potential Energy (GPE) = Mass × g × Height (Mass in kg, Height in m)
- Work Done = Force × Distance (Force in N, Distance in m)
- Power = Energy transferred ÷ Time (Energy in J, Time in s)
- Efficiency = (Useful energy output ÷ Total energy input) × 100%
Waves, Electricity, and Pressure
- Wave speed = Frequency × Wavelength (Frequency in Hz, Wavelength in m)
- Current = Charge ÷ Time (Charge in C, Time in s)
- Voltage = Energy transferred ÷ Charge (Energy in J, Charge in C)
- Resistance = Voltage ÷ Current (Voltage in V, Current in A)
- Power = Voltage × Current (Voltage in V, Current in A)
- Energy transferred = Voltage × Current × Time (Time in s)
- Moment = Force × Distance from pivot (Distance in m)
- Pressure = Force ÷ Area (Area in m²)
- Thermal energy change = Mass × Specific heat capacity × Temperature change (Mass in kg, Temp in °C)
Unit Conversion Reference
- km to m: Multiply by 1000
- m to km: Divide by 1000
- cm to m: Divide by 100
- mm to m: Divide by 1000
- g to kg: Divide by 1000
- Minutes to seconds: Multiply by 60
- Hours to seconds: Multiply by 3600
- km/h to m/s: Divide by 3.6
- kHz to Hz: Multiply by 1000
- cm² to m²: Divide by 10,000
- cm³ to m³: Divide by 1,000,000