ocr: How are mass and energy related? The best-known equation in the worldi is probably: E-mc2. Very few people, however, know what the equation means. It was first discovered by Albert Einstein, the famous physicist. It says that the amount of energy that an object contains, E (in joules), is equal to the object's mass, m (in kilograms), multiplied by the square of the speed oflight, C (in meters per second). The speed of light is extremely high - 300 million meters per second -so the amount of energy in even a small object is enormous. For example, a ball with a mass of 10 grams (0.01kg) will con ...
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