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Kinetic Energy Calculator

Find the kinetic energy of a moving object, or work backwards to its speed or mass from a known amount of energy stored in its motion.

KE = ½ × m × v²

Kinetic energy grows with mass and with the square of speed, so doubling speed quadruples the energy.

Mass (kg)

Speed (m/s)

Kinetic energy (J)

Kinetic energy

— J

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