Two sailors are at the tops of their ships' masts in the open ocean.The mast of ship A is twice as high as that of ship B.How much  farther can sailor A see than sailor B? a)no farther.                  b)a little more that 40% farther  c)twice as far d)almost three times e)four times as far

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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.