How Fast Can Usain Bolt Run?

How can Usain Bolt improve his world 100 metres sprint record significantly without improving his speed? How fast should he be able to run? We will also examine the mechanics of sprinting and the effects of wind assistance, timing accuracy, and altitude on sprint times and look at the status of the long-standing women’s sprint world records set by the late Florence Griffiths Joyner (‘Flo-Jo’) in 1988.

This is part of Professor Barrow's Maths in Sport series. The other lectures are:
      David and Goliath: Strength and Power in Sport
      Citius, Altius, Fortius: Records, Medals and Drug Taking
      Let's Twist Again: Throwing, Jumping and Spinning
      Final Score
      On the Waterfront