A car travels 21 miles in 20 minutes. a. How many hours did the car spend traveling? b. What was the average velocity of the car in miles per hour during its trip? c. After reaching its destination, suppose the car travels an additional 100 miles over 2.5 hours. Find the average velocity of the car in mph over this second trip. d. Find the average velocity of the car in mph over the combined legs of the trip.

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Units and Dimensions

These are generally defined as the terms which precede or describes the dimensions further. These are also further divided into two parts namely fundamental units and the derived units.