If the lift coefficient for a Boeing 777 aircraft is 15 times greater than its drag coefficient, can it glide from an altitude of \(30,000 \mathrm{ft}\) to an airport \(80 \mathrm{mi}\) away if it loses power from its engines? Explain. (See Problem 9.112.)

Problem 9.112

A Boeing 747 aircraft weighing \(580,000 \mathrm{lb}\) when loaded with fuel and 100 passengers takes off with an airspeed of \(140 \mathrm{mph}\). With the same configuration (i.e., angle of attack, flap settings, etc.), what is its takeoff speed if it is loaded with 372 passengers? Assume each passenger with luggage weighs \(200 \mathrm{lb}\).