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Review for Unit 2 Test (1D Motion)

Review for Unit 2 Test (1D Motion). Heaton Fall 2-14. Bridge Due Tomorrow. See rubric for details on all documents needed. What are the units for?. Force Mass Velocity Acceleration Distance. What is on the test?. Format: Multiple Choice and Open Ended. Name that force….

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Review for Unit 2 Test (1D Motion)

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  1. Review for Unit 2 Test (1D Motion) Heaton Fall 2-14

  2. Bridge Due Tomorrow • See rubric for details on all documents needed

  3. What are the units for? • Force • Mass • Velocity • Acceleration • Distance

  4. What is on the test? • Format: Multiple Choice and Open Ended

  5. Name that force… • Upward force of ice on a hockey puck • Normal Force • Force that slows down a car that is coasting in neutral • Force of Friction • Force that pushes a rocket ship that is firing its engines up • Force of Lift (Force of Applied) • Force in a string that holds a painting hung on a wall • Force of Tension

  6. Inertia • What is inertia? • an objects tendency to avoid change • Property of matter • Increases with Mass • Newton’s First Law is also called Law of Interia • Ex) more massive objects are harder to move • Ex) If you left this room as is and returned a 100 years later, it would still be the same (minus decay and dust)

  7. FBD of a rocket accelerating into spacehttp://www.sciencelearn.org.nz/Contexts/Rockets/Science-Ideas-and-Concepts/Lift-off

  8. Question 5 • 1.39 x 10^-8 N

  9. Question 6 • 5.84 x 10^-10

  10. Question 7 • Fnet = m a = 4000 N

  11. Question 8 • 4.41 N

  12. Question 9 • 4410 N

  13. Question 10 • -3060 N

  14. Question 11 • 0.19 • No units for coefficient of friction, because the units should cancel each other out.

  15. Question 12 • -750 N

  16. Question 13 • Fnet = 280 N • W = Fg = 84 kg • A = 3.3 m/s^2

  17. Question 14 • a = 34.1 m/s/s • Fnet = (29,545 kg) (34.1 m/s/s) • = 1,007,484.5 = 1.0 x10^6

  18. Question 15 • 166.6 N

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