Mathematics>Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
An object's observed length depends on its speed relative to the observer. The observed length L is described by the above equation, where v is the speed of the object relative to the observer, c is the speed of light, and L subscript 0 is the observed length when the object is at rest relative to the observer. Which of the following correctly expresses the object's speed in terms of L, L0, and c?