Overview

Calculate kinetic energy and potential (gravitational) energy. Used for energy conservation analysis, mechanics problem-solving, and engineering energy estimation.

Formula

Kinetic Energy: KE = ½mv²
Potential Energy (Gravitational): PE = mgh
Mechanical Energy Conservation: KE₁ + PE₁ = KE₂ + PE₂ (when no non-conservative forces)

Work = Force × Distance × cos(θ)  (W = Fd cos θ)
Work-Energy Theorem: W_net = ΔKE

Units: Energy (J, Joule), Mass (kg), Velocity (m/s), Height (m)

How to Use

1. 1Select the energy type to calculate (kinetic or potential).
2. 2For kinetic energy: enter mass (kg) and velocity (m/s).
3. 3For potential energy: enter mass (kg) and height (m).
4. 4View the result in Joules (J) or kilojoules (kJ).

Tips

• ✔Kinetic energy is proportional to the square of velocity — double the speed means 4× the energy.
• ✔1 J = 1 N·m = 1 kg·m²/s².
• ✔1 cal ≈ 4.184 J, 1 kWh = 3,600,000 J.
• ✔Using energy conservation, potential energy at height converts to kinetic energy at ground level.

FAQ