MyCTMainForum
Kinetic energy

Classical mechanics index

The classical expression for kinetic energy is used to calculate any of mass, velocity, or energy from the other two.
 Mass is kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns Velocity is m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Kinetic energy is J - SI UNITS - nJ µJ mJ kJ MJ GJ -- IMPERIAL -- cal kcal ft⋅pdf ft⋅pdl BTU - SCIENTIFIC - eV keV Hartrees (au) kJ/mol wavenumber kHz photon MHz photon GHz photon THz photon nm photon nm mole of ph. --- OTHER --- erg kWh barrels of oil tons of coal tons of TNT ktons of TNT Mtons of TNT Krakatoas Gives a mass of kg --- METRIC --- ng µg mg grams tonnes M tonnes -- IMPERIAL -- grains ounces pounds stones cwt tons --- OTHER --- u (Da) Troy ounces carats pennyweight Moons Earths Suns Gives a velocity of m/s --- METRIC --- cm/s km/s -- IMPERIAL -- inches/second feet/second feet/minute - RECIPROCAL - min/mile min/km min/5 km min/10 km --- OTHER --- km/h mph miles/second knots furl's/f'night Mach c (light speed) Gives an energy of J - SI UNITS - nJ µJ mJ kJ MJ GJ -- IMPERIAL -- cal kcal ft⋅pdf ft⋅pdl BTU - SCIENTIFIC - eV keV Hartrees (au) kJ/mol wavenumber kHz photon MHz photon GHz photon THz photon nm photon nm mole of ph. --- OTHER --- erg kWh barrels of oil tons of coal tons of TNT ktons of TNT Mtons of TNT Krakatoas Add

This energy calculation is based on classical mechanics and therefore does not take relativistic effects into account. Fill in any two of the inputs, and the third variable will be calculated in the relevant output box. Ignore boxes marked "0", "Infinity" or "NaN".
This calc may be used, e.g. to calculate the energy of a bullet and to find what speed a 1 kg weight would need to be traveling to have the same amount of energy.