1. Speed and Acceleration

2. Vocabulary DefinitionIllustration 3 Examples3 Non-examples VocabularyWord SpeedSpeed VelocityVelocity AccelerationAcceleration

3. What is Speed? The distance an object travels in a certain amount of time.

4. How do you calculate Speed? Speed is calculated by dividing the distance the object traveled by the time it took to travel that distance. Distance Speed = Time

5. D ST Cover the one you’re looking for

6. Critical Thinking - Speed You will drive to a town that is 100km away. Half the trip you will be able to drive 100km/h (on the highway) and half the trip you will drive 50km/h (going through small towns). How long will it take you to get there? Show your work!

7. My How Times Have Changed!

8. Speed: Speed = Distance/Time What are two ways to increase speed? (Hint: Remember Newton’s 2 nd Law!) Let’s make up some distance and time values and calculate speed.

9. Speed: Speed = Distance/Time Let’s make up some distance and time values and calculate speed. What are two ways to increase speed. (Hint: Remember Newton’s 2 nd Law!)

10. CITYDISTANCECITYDISTANCECITYDISTANCE Albany NY 1014 EL Paso TX 1426 Norfolk VA 557 Albuquerque NM 1406 Fargo ND 1369 Oklahoma City OK 562 Baltimore MD 673 Grand Junction CO 1660 Omaha NE 1000 Billings, MT 1980 Hartford CT 1000 Orlando FL 440 Birmingham AL 148 Houston, TX 797 Philadelphia PA 816 Boise ID 2184 Indianapolis, IN 529 Phoenix AZ 1562 Boston, MA 1100 Jackson Ms 383 Pittsburgh PA 656 Buffalo NY 896 Jacksonville FL 346 Portland ME 1229 Charleston SC 321 Kansas City, MO 810 Portland OR 2604 Charleston WV 503 Las Vegas NV 1984 Rapid City SD 1521 Charlotte, Nc 242 Little Rock AR 531 Reno NV 2406 Cheyenne WY 1450 Los Angeles CA 2205 St. Louis Mo 556 Chicago, IL 712 Louisville KY 415 Salt Lake City UT 1883 Cleve land OH 715 Memphis TN 393 San Antonio TX 992 Columbia Sc 213 Miami FL 661 San Diego CA 25154 Columbus OH 574 Milwaukee WI 811 San Francisco CA 2503 Dallas, TX 791 Minneapolis MN 1132 Seattle WA 2675 Denver, CO 1415 Nashville TN 242 Washington DC 635 Des Moines IA 961 New Orleans LA 468 Wichita KS 972 Detroit, MI 723 New York NY 896 Distance from Atlanta, GA to other US Cities Distance from Atlanta, GA to other US Cities

11. What is Velocity? Is both speed and direction. 40 km/hr = speed 40 km/hr west = velocity Can change velocity two ways –Change speed –Or change directions

12. What is Velocity? Calculate the total velocity for each of the passengers. Airplane: 800km/h west 4km/h west 5km/h east 0km/h west

13. What information must you know in order to calculate speed? What is the error in the following statement: –The velocity of the car is 55km/hr. Quick Review

14. How can motion be shown on a graph? You can show the motion of an object on a line graph in which you plot distance versus time. The slope of the graph tells you whether the object is moving fast, slow, or even at all.

15. How can motion be shown on a graph? 700 600 500 400 300 200 100 0 1234567 Distance (km) Time (h) Graph showing the speed of a car ---- Car 1 ---- Car 2 1.Which car is faster? Support your answer with data from the graph.

16. Speed Graph: The distance a runner traveled in 7 minutes. How far does she travel in 5 minutes? Is her speed constant? –How do you know?

17. Distance-Time Graphs Graph A:Graph B:Graph C:

18. Distance-Time Graphs Distance-time graph –The following graph shows the distance Kyle traveled on his bicycle trip and the amount of time it took him to travel that distance. During which 5-minute interval did Kyle achieve the greatest average speed? What may have happened between t = 10 and t = 15 minutes?

19. Ticket out the door! 1.What is speed? 2. What do you know about the motion of an object that has an average speed of 1 m/s? 3. What is the difference between speed and velocity?