Air resistance always opposes the direction of motion. Taking air resistance into account, will the time of flight for the upward journey be the same, less, or more than the time of flight for the downward journey? Be sure to defend your answer! (The solution to this puzzle has interesting implications for the question concerning how dangerous is a bullet returing to the earth after it has been fired directly upward.)
Be sure to enter your full name. Enter your email address ONLY if you want the number of points awarded e-mailed to you. Responses should be brief but complete. You must click the SUBMIT button to submit your entry. Entries are due by noon on Monday of next week.