1. 400 600 800 1000 200 400 600 800 1000 200 400 600 800 1000 200 400 600 800 1000 200 400 600 800 1000 200 ForcesWorkPowerConversionsGrab Bag FJ

2. In which direction is the force of friction acting on the sliding panda? Panda’s movement

3. Up the slide, in the opposite direction as the panda’s movement. Frictional Force

4. Describe the forces that are acting on you as you jump off of a diving board into the water.

5. Gravity Air Friction Water Friction Bonus: sliding friction- walking on the board

6. At your lab, you pull a rubber band back 2 in with a spring scale and measure 1 Newton. How much force could you expect if you pull the rubber band back 4 inches?

7. 2 Newtons

8. You are testing how the number of batteries in series will effect the force of a motor. In this experiment, force is the __________ variable.

9. Dependent Variable

10. Which two types of friction are affected by surface area?

11. Air Friction Water Friction

12. What do you need to know to calculate work?

13. Force and Distance

14. Felix throws a snowball 10 meters with a force of 20 Newtons. How much work is being done on the snowball?

15. 200 N-m or 200 joules

16. As friction decreases, the amount of work done increases. True or False.

17. False! As friction decreases, force decreases. Since Work=Force x Distance, as force decreases, so does work.

18. What are the 2 ways you can write the units for work?

19. N-m or joules

20. Brady decides to carry 10 books up to the library. He calculates the amount of work done on the books to be 300 N-m. If he decides to take two trips with 5 books each time, what will happen to the amount of work done?

21. The work done does not change. The same amount of work is done on the books.

22. What do you need to know to calculate Power?

23. Work (force and distance) and Time P=Work time

24. What are the two ways to write the units for power?

25. N-m Watts sec

26. A tractor is able to pull a load with a force of 10 N a distance of 30 m in 50 seconds. How much power does the tractor have?

27. 6 Watts

28. Describe the relationship shown in the above graph. Power (Watts) Number of batteries 123 1 2 3

29. As the number of batteries increases, the power of the motor increases.

30. Mr. Skinner carries 10 books to the library. Ms. Wangerin takes 2 trips each time carrying 5. Who does the most work? Who uses the most power?

31. They both do the same amount of total work, but Mr. Skinner uses more power.

32. If Steve studies for 10 minutes a day, how many minutes does he study in one week?

33. 70 minutes

34. If you are riding your bike 24 inches per second, how many feet per minute are you traveling?

35. 120 feet per minute

36. You use a meter stick to measure the length of string in your experiment. You find that the length is 148 cm. How many meters is the string?

37. 1.48 meters

38. How many feet are in a mile?

39. 5, 280 ft

40. A cop pulls over a car for going 7,040 feet per minute in a zone where the speed limit is 65 mph. Was the car speeding?

41. YES! They were traveling 80 mph

42. What is the difference between weight and mass?

43. Mass is the amount of matter an object is made up of. Weight is the force of gravity acting on that mass.

44. A motor is connected to a switch and two batteries in series. Describe one way energy changes forms in this circuit.

45. Chemical to electrical in the battery. Electrical to mechanical in the motor. Some energy transferred to heat

46. In a new lab you will be testing three different types of motors to see how many washers each motor will be able to lift. Which type of graph will you use to show your data?

47. Bar Graph! The different types of motors are separate categories of data.

48. List 3 words that mean something different in physics than they do in everyday language.

49. Work Power Force Fruit Etc.

50. What does plugging a rechargeable battery into an outlet do?

51. The electrical energy forces the chemical reaction in the battery to reverse and restore the electrolyte. The battery is then ready for the chemical reaction to move forward.

52. Final Jeopardy Using a microscope

53. Final Jeopardy Make sure your can focus a microscope to 400x, sketch a scientific drawing, and label three organelles