Equations

• Speed (m/s) = Distance/Time
• Velocity (m/s) = Displacement/Time
• Acceleration = Change in velocity / Time
• Force (N) = Mass × Acceleration
• Weight on Earth (N) = Mass × 10
• Density (kg/m³) = Mass / Volume
• Hooke's law: Force (N) = constant × extension
• Pressure (Pa) = Force / Area
• Moment of a force (Nm) = Force (N) × perpendicular distance from pivot (m)
• Work (J) = Force × distance
• Power (W) = work × time
• Kinetic Energy (J) = 1/2 × mass × velocity squared
• Gravitational potential energy (J) = Mass (kg) × gravitational field strength (g) × height (m)
• Efficiency (%) = (Useful energy output / Total energy input) × 100
• Efficiency (%) = (Useful power output / Total power input) × 100
• Current (A) = Charge / Time
• Voltage (V) = Current × Resistance
• Power (W) = Current × Voltage
• Energy transferred (J) = Charge × Potential Difference
• Weight is measured in Newtons
• Mass is how much matter you contain everywhere in the universe