As soon as a man sees a piece of card beginning to drop, he tries to catch it by closing his hand around the card. How far has the card dropped before the man catches it, if the catching response time of the man in response to this visual stimulation is 132 ms? 17.1 cm O 8.55 cm 11.3 cm O 13.6 cm 15.9 cm 5.77 cm

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.