He used a body swerve to shake off a marker and create space for himself. Then, with marvelous disguise, with the merest of back lift from his left foot, he propelled the ball at startling velocity.
However, increasing the velocity at a given spin reduced the lift coefficient.
但是，旋转速度不变的情况下增加球速会降低升力系数。
3
If you go much faster, the center of lift moves back on the wing, pushing the nose down and increasing velocity, until you soon approach the speed of sound.