According to the theory of relativity, when moving objects are measured from a stationary frame, they are length contracted in the direction of motion. How much is the length of an object contracted (how much shorter) if the object is moving at a speed of v = c cos 60° = (1/2) c ? Group of answer choices L / Lo = sin 60° = (1/2)(√3) L / Lo = cos2 60° = 1/4 L / Lo = cos 60° = 1/2 L / Lo = sin2 60° = 3/4

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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.