Kinetic & potential energy
Calculate translational kinetic energy and gravitational potential energy in joules (J).
Open calculatorv = g × t and s = ½ g t² starting from rest (default g = 9.81 m/s², neglecting air resistance).
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After 2 seconds of free fall at 9.81 m/s², an object has fallen ~19.6 m and reached ~19.6 m/s (70.6 km/h).
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Educational estimate only. Not medical, tax, legal or financial advice.