A spacecraft takes off from Cape Canaveral in Florida and orbits Earth 18 times before l...

A spacecraft takes off from Cape Canaveral in Florida and orbits Earth 18 times before landing back at Cape Canaveral 24 hours and 15 minutes later. During this time, it moves in a circular orbit with radius (a) What is the average speed of the space shuttle during its journey? (b) What is the average velocity?