The methods of analyzing space, time and motion described in the previous several lectures are called kinematics. Galileo rightly deserves much of the credit for developing these methods. [Although ...

You say there is no such thing as “centrifugal force” (1 March, p 47). Yes, there is – in the right frame of reference. There is, of course, no centrifugal force in an inertial frame of reference (in ...