According to the concept of length contraction, what happens to the length of an object as it approaches the speed of light and
then slows down, eventually coming to a stop?
it is always observed as contracting.
it is always observed as the same length.
it is observed as expanding and then contracting back to its original length.
it is observed as contracting and then expanding back to its original length.

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d