PH 105-106

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Author:
Anonymous
ID:
197190
Filename:
PH 105-106
Updated:
2013-02-01 14:43:39
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PH
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Description:
Important Physics Equations
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  1. Average Velocity
    & Units


    m/s
  2. Average Acceleration
    & Units



    m/s2
  3. Velocity at time t with acceleration a:
    Units?


    m/s
  4. Distance at time t with acceleration a:
    Units?



    meters
  5. Find velocity at a point d with acceleration a:
  6. distance at time t without acceleration a:
  7. Average Velocity:
  8. On an xy axis with a velocity with angle between velocity and the x axis, What is the X component of the velocity? What is the Y component of velocity?


  9. Common Trigonometric Functions:

    sin 0
    cos 0
    tan 0
    • sin 0 = 0
    • cos 0 = 1
    • tan 0 = 0
  10. sin15
    cos15
    tan15
    • sin15=0.259
    • cos15=0.966
    • tan15=0.268
  11. sin30
    cos30
    tan30
    • sin30=0.5
    • cos30=0.866
    • tan30=0.577
  12. sin45
    cos45
    tan45
    • sin45=0.707
    • cos45=0.707
    • tan45=1
  13. sin60
    cos60
    tan60
    • sin60=0.866
    • cos60=0.5
    • tan60=1.73
  14. sin75
    cos75
    tan75
    • sin75=0.966
    • cos75=0.259
    • tan75=3.73
  15. sin90
    cos90
    tan90
    • sin90=1
    • cos90=0
    • tan90= not possible.
  16. Define momentum:
    What are it's units?


    kg m/s or N s
  17. Define Impulse:
    • But is more useful as: Change in Momentum
  18. Define Work:
    What are the Units?
    • where theta is the angle between F and d
    • Its units are Joules (N m)
  19. Define Power
    What are the units?


    It is Joules/s or Watts.
  20. Define Kinetic Energy:


    the Joule
  21. Define PotentialG Energy


    The Joule
  22. When is total mechanical energy conserved?
    When the sum of PE and KE is constant
  23. What is the Work Energy Theorum?
    • All work performed is equal to the Change in Kinetic Energy:

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