QUESTION 4 Same situation as in the previous problem this time the magnet has mass 7.83 kg, the force pulling it to the right is 90.2 N, the cord has length 1.45 m and the ceiling is 3.16 m above the floor. How far to the right of its start point will the magnet have traveled when it hits the floor after the cord is cut?   A 4.18 m   B 3.76 m   C 2.61 m   D 2.09 m

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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.