Speed and Velocity Tiered Problems: Options: Choose one. A) Complete 7 of the level one questions and all of the level one graph questions as well as 2 of the level 2 questions and two of the level 2 graph questions (15 total) B) Complete two of the level one questions and four of the level two questions and all of the level 2 graph questions (10 total) Level 1 Questions: 1. What is the difference between instantaneous velocity and average velocity? 2. What is the difference between speed and velocity? 3. Calculate the average speed in m/s of a cheetah that runs 140 meters in 5 seconds? 4. How far do you travel if you maintain an average speed of 10 km/s for 40 seconds? 5. How fast is a cyclist going who travels 40 km in 1.5 hours? 6. What is the velocity of a worm moving 1 meter in 2 hours to the East? 7. What is the displacement of a runner go who is running 0.5 km/h for 3 hours due North? 8. How long does it take a cow to walk 100 meters across a pasture when she moves at 0.25 m/s? 9. The Quebec Racer travels for 6 hours at 105 mph. The Chicago Skyscraper travels for 8.5 hours at 92 mph. Which train covers more distance? How much more? 10. If the West Coast Skyliner is traveling north at 120 mph and the Skyliner II is traveling south at 120 mph, do these trains have the same speed? Do they have the same velocity? 11. If the speedometer of a car reads a constant speed of 40 km/h, can you say that the car has a constant velocity? Why or why not? Level One Graph Questions: 12. Calculate the average speed of the object during the first three seconds the object is in motion. 13. Calculate the average speed of the object during seconds 2 through five seconds. 14. What does the slope of a position-time graph represent? 15. Describe what the motion of the object would look like during the first five seconds of motion. Describe its motion of the object between the time intervals of 5 and 10 s. Level 2 Questions: 16. In the qualifying round of the 50-yd freestyle in the sectional swimming championship, Dugan got an early lead by finishing the first 25.00 yd in 10.01 seconds. Dugan finished the return leg (25.00 yd distance) in 10.22 seconds. a. Determine Dugan's average speed for the entire race. b. Determine Dugan's average speed for the first 25.00 yd leg of the race. c. Determine Dugan's average velocity for the entire race. 17. Sound travels at a speed of 330 m/s. If a lightning bolt strikes the ground 1 km away from you, how long will it take for the sound to reach you? 18. You and a friend each drive 50.0 km. You travel at 90.0 km/h; your friend travels at 95.0 km/h. How long will your friend have to wait for you at the end of the trip? 19. Ken Runfast is the star of the cross-country team. During a recent morning run, Ken averaged a speed of 5.8 m/s for 12.9 minutes. Ken then averaged a speed of 6.10 m/s for 7.1 minutes. Determine the total distance which Ken ran during his 20 minute jog. 20. A car travels 200 m east, 400 m west and then 800 m east again. It does this in a time of 100 seconds. A) What is the car’s average speed? B) What is the car’s average velocity? Level 2 Graph Questions: 21. During which time interval does the object have the fastest motion? 22. Describe the motion of the object during the following time intervals: a. 0s to 10s b. 10s to 15s c. 15s to 30s d. 30s to 40 s 23. Does the slope of the graph above represent the speed of an object or the velocity of an object? Explain your choice. 24. What is the total distance the object travels? What is the total displacement?