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Jeopardy

Jeopardy. Choose a category. You will be given the answer. You must give the correct question. Click to begin. Choose a point value. Choose a point value. Click here for Final Jeopardy. Vocabulary. Centripetal/ Centrifugal forces. gravity. friction. Newton’s Laws. 10 Point.

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Jeopardy

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  1. Jeopardy Choose a category. You will be given the answer. You must give the correct question. Click to begin.

  2. Choose a point value. Choose a point value. Click here for Final Jeopardy

  3. Vocabulary Centripetal/ Centrifugal forces gravity friction Newton’s Laws 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points 20 Points 20 Points 20 Points 20 Points 30 Points 30 Points 30 Points 30 Points 30 Points 40 Points 40 Points 40 Points 40 Points 40 Points 50 Points 50 Points 50 Points 50 Points 50 Points

  4. This is the highest speed reached by a falling object – this occurs when the weight of the falling object is balanced out by the air resistance.

  5. Terminal Velocity

  6. This is the force pulling down on an object due to the force of gravity

  7. Weight

  8. This is he sum total of all forces acting on an object

  9. Net Force

  10. The resistance to a change in motion

  11. inertia

  12. The force exerted on a moving object in a direction up and perpendicular to the motion of the object

  13. Normal force

  14. This is the force that you “feel” when riding “The Whip” at Idlewild that seems to push you out against the seat.

  15. Centrifugal force

  16. What is the amount of centripetal force needed to keep a 10 Kg ball spinning in a circle of radius 1 m at a velocity of 10 m/s?

  17. 1000 N

  18. What amount of force is needed to keep a 1000 Kg car moving at a velocity of 20 m/s around a turn of radius 12 m?

  19. 33,333.3 N

  20. How much force is needed to keep a 1000 g ball moving at a velocity of 10 m/s around a circle of diameter 20 cm?

  21. 10,000 N

  22. What is the maximum speed a ball on a string can be travelling if the ball has a mass of 8 Kg and the force needed to break the string is 150 N when the ball is spinning around a radius of 0.8 m?

  23. 3.16 m/s

  24. What are the 2 factors that affect the amount of gravitational attraction between 2 objects?

  25. The masses of the objects & the distance between them

  26. If the gravitational force between two objects is F and the mass of one of the objects is doubled with everything else kept the same; then in terms of F, what is the new gravitational force between the objects?

  27. 2F

  28. If the gravitational force between two objects is F and the mass of both of the objects is doubled with everything else kept the same; then in terms of F, what is the new gravitational force between the objects?

  29. 4F

  30. If the gravitational force between two objects is F and the mass of both of the objects is doubled as well as the distance between them, then in terms of F, what is the new gravitational force between the objects?

  31. F

  32. What is the acceleration of gravity on the moon if the mass of the moon is 1/6th that of the Earth?

  33. 1.6 m/s2

  34. What type of friction exists when rubbing your hands together?

  35. Sliding friction

  36. What is the greater, static friction of rolling friction?

  37. Static friction

  38. What is the coefficient of friction for a 50 N cup slid across a table that has 20 N of friction?

  39. 0.4

  40. If the coefficient of static friction between a desk & the floor is 0.3 with a Normal force of 200 N, what is the force of static friction needed to overcome to get the object to move?

  41. 60 N

  42. A 10 Kg box requires how many N of force to start sliding it across the floor in which the coefficient of friction is 0.25? (Assume gravity = 10 m/s2)

  43. 25 N

  44. This is Newton’s Law that explains the action/reaction nature of forces.

  45. 3rd Law

  46. This is the law that explains why, when riding a skateboard, if you hit a pebble stopping the board, you continue to move forward.

  47. 1st Law

  48. According to Newton’s 2nd Law, objects will do this as a result of an unbalanced force?

  49. ACCELERATE

  50. According to Newton’s 2nd Law, 100 N of force would cause a 10 Kg object to accelerate at a rate of ____?

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