Relative Motion
Definition: Relative Speed is the measurement of motion of a particular object relative to its environment or another object, close or distant.
Math Solution:There is a car moving 45 MPH East and a bug on a book inside the car, the book is sliding across the car at 2 MPH West and the fly is moving on he book 1 MPH East. What is the bug's relative speed to a T.V set on a house the car just passed.Answer: 44 MPH East