1. Physics Final Exam Review
JEOPARDY!
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Physics Final Exam Review
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2. JEOPARDY!
Define This
Graphing
Vectors / Projectiles
Newton’s Laws
Circular Motion
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3. Define: Period Template by Modified by
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4. The amount of time it takes for an object to complete one revolution (travel in a complete circle).
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5. If you divided the total distance an object traveled by the total time it was traveling, what would you be calculating?
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6. Average Velocity Template by Modified by
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7. Define inertia and identify what it depends on.
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8. An object’s resistance to a change in velocity
An object’s resistance to a change in velocity. Objects with greater mass have greater inertia.
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9. Define Newton’s 3rd Law and give an example of it in action.
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10. For every action force there is an equal and opposite reaction force
For every action force there is an equal and opposite reaction force. Forces come in pairs. Boat moves backwards when you jump off. Balloon flying forward as air escapes.
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11. Define: Centripetal Force
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12. When the net force of an object points toward the center of a circular path, it is said to have a centripetal force. In order for there to be circular motion, the net force has to be toward the center of the circle.
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13. What does a negative velocity look like on a position-time graph?
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14. A constant negative slope.
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15. What does a positive acceleration look like on a position-time graph?
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16. A curved line in the shape of a smiley face, or bowl.
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17. What does a negative acceleration look like on a velocity-time graph?
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18. A constant negative slope.
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19. During which time interval(s) is the object stopped?
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20. Third
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21. When is the object stopped, accelerating, and/or moving at a constant velocity?
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22. Constant positive Velocity
Negative
Acceleration
Stopped
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23. What is the difference between a vector and a scalar?
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24. A vector has both magnitude AND direction.
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25. If an airplane is flying due East at 130 km/hr, but there is a wind heading due West at 25 km/hr, what is the resultant velocity of the plane?
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26. 105 km/hr due East Template by Modified by
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27. Daily Double!!!
At the top of the trajectory of a rubber ball thrown in the air, the vertical velocity is 0 m/s. What is the acceleration at the top of the trajectory?
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28. 9.8 m/s/s downward Template by Modified by
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29. If the initial horizontal velocity of a tossed basketball is 8 m/s, what is its horizontal velocity right before it hits the ground?
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30. 8 m/s
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31. Explain how/why the horizontal and vertical motion of a projectile (cannonball in flight) are independent.
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32. The vertical dimension is affected by gravity, so the vertical acceleration is constant (or the vertical velocity is always changing). The horizontal dimension is NOT affected by gravity, so the horizontal velocity is always constant.
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33. Which of Newton’s Laws tells us about Net Force?
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34. 2nd Law Fnet=ma Template by Modified by
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35. Explain why the marker falls into the hoop during the hoop & marker demonstration
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36. Inertia. The marker wants to maintain its constant velocity of zero
Inertia. The marker wants to maintain its constant velocity of zero. When the force is applied to the hoop, the marker stays at rest, but then falls because of Earth’s gravity.
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37. Explain why an object that is accelerating must have unbalanced forces acting on it.
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38. Based on Newton’s 2nd Law (Fnet=ma), we know that in order for there to be an acceleration, there has to be a non-zero net force.
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39. Timmy is pushing a chair to the right with a force of 40 N and Sally is pulling the chair to the left. If the net force is zero, what amount of force is Sally pulling with?
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40. 40 N
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41. If an object is sliding down an incline plane at a constant velocity, the friction force is equal in magnitude but opposite in direction of:
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42. The parallel component of the weight
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43. An object moving in circular motion travels a distance of ______ in one period.
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44. Circumference  2r Template by Modified by
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45. In order to pick up the marble using the Styrofoam cup, you had to spin the marble in a relatively fast circle around the inside of the cup. This circular motion was caused by a force on the marble that pointed in which direction?
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46. Toward the center of the cup
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47. In order for Suzie and Johnny to balance on a teeter-totter, Johnny has to sit closer to the edge of his side. Who weighs more, Suzie or Johnny?
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48. Suzie
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49. There is always a centripetal acceleration during uniform circular motion because the _______ is always changing.
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50. Velocity (the direction of the velocity vector is always changing)
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51. Why do people use leverage to help them move heavy objects
Why do people use leverage to help them move heavy objects? (Be specific.)
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52. Torque = (force perp.) distance The further away from the axis of rotation a person applies a force, the less that force has to be in order to move the object.
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53. All objects near the surface of the Earth fall at a constant acceleration of 9.8 m/s/s. Why?
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54. The gravitational force of the Earth.
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55. Mary had a 15 kg little lamb. What was the lamb’s weight?
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56. 142.5 N
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57. Use the circle provided to draw in the velocity vector and the acceleration vector for an object traveling in a clockwise circle. What is the angle between these vectors?
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58. 90 degrees
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59. Explain what happens when a child of small mass pushes her parent while they are both standing on ice. Why does this happen?
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60. They will travel in opposite directions of each other
They will travel in opposite directions of each other. The child will move faster and further than the parent. Conservation of Momentum.
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61. If you double the distance between two objects and triple one of the masses, what will happen to the gravitational force between the two objects?
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62. The new gravitational force will be 3/4 the original gravitational force.
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