Constant Motion Jeopardy

1. Constant Motion Jeopardy

2. Part 1: Relative Motion

3. Relative Motion – 10ptsDescribe the motion of the middle kayak according to the observer in the back. Picture 1 Picture 2 Picture 3 Answer Main

4. Relative Motion Answer – 10pts • The kayak appears to be moving forwards – away from the observer. Question Main

5. Relative Motion – 20ptsDescribe the motion of the middle kayak according to the observer in the front. Picture 1 Picture 2 Picture 3 Answer Main

6. Relative Motion Answer – 20pts • The kayak appears to be moving forwards – towards the observer. Question Main

7. Relative Motion – 30pts • Choose one observer who would see the person moving backwards. Photo 1 Photo 2 Answer Main

8. Relative Motion Answer – 30pts • Anything moving faster than the person would see the person moving backwards (ex: the train) Photo 1 Photo 2 Question Main

9. Relative Motion – 40pts • Choose one observer who would see the person as not moving. Photo 1 Photo 2 Answer Main

10. Relative Motion Answer – 40pts • Anything moving at the same speed and in the same direction as the person, would see the person as not moving (ex. The backpack) Photo 1 Photo 2 Question Main

11. Part 2: Position vs Time Graphs Main

12. Position vs. Time – 10 ptsWhere is the object at 36 seconds? Answer Main

13. Position vs. Time Answer – 10pts • The object is at -30 m. Question Main

14. Position vs. Time – 20ptsWhere does the object have a constant velocity? Answer Main

15. Position vs. Time Answer – 20pts • Constant negative velocity: 0 s – 12 s • Constant negative velocity: 36 s – 40 s  Because the slope is a straight line • Constant velocity of zero: 20 s – 28 s Question Main

16. Position vs. Time – 30ptsWhere does the object have zero velocity? Answer Main

17. Position vs. Time Answers – 30pts • The object has a constant velocity of zero over the time interval: 20 s – 28 s  Because the slope is horizontal Question Main

18. Position vs. Time – 40ptsWhat is the average velocity of the object over the total time? Answer Main

19. Position vs. Time Answer – 40pts v = ∆x/∆t ∆x = xf – xi = (-50 m) – (30 m) = -80 m ∆t = tf – ti = (40 s) – (0 s) = 40 s v = (-80 m)/(40 s) = -2 m/s Question Main

20. Part 3: Representing Motion Main

21. Representing – 10ptsDescribe the motion of each hiker in words. Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x = (0.75 m/s)t + (-150 m) Answer Main

22. Representing Answer – 10pts • Hiker 1 starts at 250 m up from a camp on the side of a mountain and is walking down the mountain (in the negative direction) at -0.5 m/s • Hiker 2 starts -150 m below the camp on the side of the mountain and is walking up the mountain (in the positive direction) at 0.75 m/s Question Main

23. Representing – 20ptsDraw a picture representing the motion of each hiker. Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x= (0.75 m/s)t + (-150 m) Answer Main

24. + Representing Answer – 20 pts Hiker 1 Camp at 0 m Hiker 2 – Question Main

25. Representing – 30ptsDraw a dot diagram representing the motion of each hiker. Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x = (0.75 m/s)t + (-150 m) Answer Main

26. Representing Answer – 30pts + Camp at 0 m - . . . . . . . . 0s 1s 2s 3s 4s 5s 6s 7s Hiker 1 . . . . . . 5s 4s 3s 2s 1s 0s Hiker 2 Question Main

27. DOUBLE JEOPARDY Representing – 40ptsPlot a Position vs. Time graph for Hiker 1 and Hiker 2’s motion Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x = (0.75 m/s)t + (-150 m) Answer Main

28. Representing Answer – 40pts Question Main

29. Part 4: Working with equations Main

30. Equations – 10ptsWhere will Hiker 1 be after 300 s? Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x = (0.75 m/s)t + (-150 m) Answer Main

31. Equations Answer – 10pts • Hiker 1: x = (–0.50 m/s)t +(250 m) t = 300 s x = (–0.50 m/s)(300 s)+(250 m) x = (-150 m) + (250 m) x = 100 m Question Main

32. Equations – 20ptsWhere will Hiker 2 be after 300 s? Hiker 1:x = (–0.50 m/s)t +(250 m) Hiker 2:x = (0.75 m/s)t + (-150 m) Answer Main

33. Equations Answer – 20pts • Hiker 2: x = (0.75 m/s)t + (-150 m) t = 300 s x = (0.75 m/s)(300 s) + (-150 m) x = (225 m) + (-150 m) x = 75 m Question Main

34. Equations – 30ptsWrite an equation for the motion of the object below. Answer Main

35. Equations Answer – 30pts xi = 15 m v = ∆x/∆t = (-20 m)/(5 s) = -4 m/s ∆x = (-5 m) – (15 m) = -20 m ∆t = (5 s) – (0 s) = 5 s x = (-4 m/s)t + (15 m) Question Main

36. Equations – 40ptsWrite an equation for the motion of the object below. Answer Main

37. Equations Answer – 40pts xi = 6 m v = -3 m/s x = (-3 m/s)t + (6 m) Question Main

38. Physics CP Jeopardy Kinematics: Constant Motion Review Main