Superman Science: The Real-World Science Behind Superman's Powers

Superman Science: The Real-World Science Behind Superman's Powers — page 5
Section 1 Flight Lessons One second Clark Kent peels off his shirt and tie The next Superman soars over Metropolis Flight is child’s play for Superman but it challenged scientists and engineers for centuries Now their discoveries in flight science allow us to touch the clouds The Physics of Flight Flight takes many forms Birds flap their wings and airplanes use jet engines But both must deal with gravity Gravity is the force that pulls all objects toward Earth Everything dropped launched or flown falls to Earth unless it overcomes gravity To do that fliers must employ thrust to move them forward through the air Aircraft get thrust from their powerful engines Birds experience thrust when they flap their wings