Originally Posted by AlphaQ
E = m*c^2
Say we have 1 gallon of water in a bucket. The water weighs approximately 3.6 kg so m = 3.6 kg. c is the speed of light and c = 300,000,000 meters/second. The total energy the mass contains is 3.6*300,000,000 = 1,080,000,000 kg*m^2/s^2 = 1,080,000,000 Joules.
The largest current container ship in the world has a mass of m=156,907,000 kg and a top speed of v=13.1 m/s. A rough estimate of the kinetic energy of the ship is E = 0.5*m*v^2 = 13,463,405,135 Joules.
1 gallon of water at rest: 1,080,000,000 Joules
1 container ship at top speed: 13,463,405,135 Joules
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