(a) What’s the percent error introduced when you use Galileo’s role, instead of Einstein’s, with vAB = 5 mi/h and VBC = 60 mi/h?
(b) Suppose you could run at half the speed of light down the corridor of a train going three-quarters the speed of light. What would your speed be relative to the ground?
(c) Prove, using Eq. 12.3, that if vAB < c and vBC < c then vAC < c. Interpret this result.