An Airline Pilot Spends a Considerable Fraction of His Life

question 19

Multiple Choice

An airline pilot spends a considerable fraction of his life traveling at a speed of several hundred kilometers per hour relative to his identical twin brother.How does the pilot's lifetime compare to that of his brother,all other things being equal?

• A) The pilot's is slightly longer.
• B) The pilot's is slightly shorter.
• C) The pilot's is much longer.
• D) The pilot's is much shorter.