Appearance

Kinetic Energy Calculator

By Calxy · Updated · Calculation methodology

Find kinetic energy from mass and speed, or rearrange K = ½mv² to solve for mass or speed, with each substitution shown.

Printed from Calxy · https://www.calxy.net/other/kinetic-energy-calculator

Translational kinetic energy9.0000 J
kg

0 – 1,000,000,000,000,000 kg

m/s

0 – 1,000,000,000,000,000 m/s

Translational kinetic energy

9.0000 J

  • Mass2.0000 kg
  • Speed3.0000 m/s
  • Momentum magnitude6.0000 kg·m/s

Classical translational energy, appropriate when speeds are much smaller than the speed of light. Rotational energy is separate.

How this was calculated

  1. K = ½ × m × v²Put in your numbers: K = ½ × 2 kg × (3 m/s)²Answer: K = 9 J

Formula and method

Kinetic energy K = ½mv². Momentum magnitude p = mv.

Worked example

A 2 kg object moving at 3 m/s has 9 J of translational kinetic energy and momentum magnitude 6 kg·m/s.

Frequently asked questions

Does this include rotation or relativistic motion?

No. Rotation has a separate energy term, and speeds near the speed of light require relativistic mechanics.

References

Last updated . Results are estimates for informational purposes only.