Super Hamster stands with a mass of 1.5 kg and saves the Earth by moving a comet which has a mass of 8.2 x 106 kg. The comet starts at rest but is accelerated to 9.3 m/s in the 5.1 s it takes Super Hamster to push it away. How fast will Super Hamster be traveling at the end of that time? Answer: -21700 Check

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.