What distance is and its SI unit, and how to use maps to measure distance.
Find the distance when objects travel in opposite directions
Find the distance when objects travel from the same point and in the same direction
Find distance remaining given total time and two rates
Reviews the definition of distance, the SI unit for distance, and how maps can be used to measure distance.
Learn how GPS works and why Einstein's concept of gravity and the relativity of time must be taken into account for GPS to work.