Science Powerpoint
Transcript: Average velocity is based on where she ended her trip; specifically, how far she is from her starting point. This distance from the starting point is called displacement.Since your displacement from where she started was 3 meters to the right, and this trip took a total of 6 seconds, her average velocity was 3 m divided by 6 s, or 0.5 m/s right. This is average velocity. You have traveled a total distance of 12 meters, and have stopped 3 meters from where you began.Let's suppose you covered each leg of your journey in one second. This means that the total time for your trip was 6 seconds.Since you covered a total distance of 12 meters in 6 seconds, her average speed for the trip is 2 m/s. This is average speed. Formula Average speed does not describe the speed variations that may have taken place during shorter time intervals, and so average speed is often quite different from a value of instantaneous speed Average Speed vs. Average Velocity The formula for Average Speed is Distance divided by time. Average vs Instantaneous Speed The instantaneous speed of an object is not to be confused with the average speed. Average speed is distance over a certain period of time whereas Instantaneous speed is speed at a given moment in time. What is it? The average speed of an object tells you the average rate at which it covers distance. If a car's average speed is 65 miles per hour, this means that the car's position will change on average by 65 miles each hour. For example: If you go 200 miles in 4 hours, you divide 200 by 4 and get 50mph. Average Speed For Example: You were driving 60 mph, but you might have not been going that exact speed at certain point Chapter 6, Section 3