Oceanographer Bob Ballard, famous for his discovery of the Titanic on the floor of the Atlantic Ocean, used the deep diving submersible Alvin to examine the wreckage for the National Geographic Society. If you used a 1/8 scale model in water at 60F to evaluate drag characteristics, what model velocity should be used in tests to correspond to a current of 15 knots in liquid water near 32F ? Suppose you observed a drag force of 35lbf during the tests. What drag force would you expect on the actual vehicle