# Physics

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1. MKS System
Meter, Kilogram, Seconds
2. Kinematics
The study of the motion of an object without regard to the causes of the motion.
3. Average Velocity (v) equals
• Change in displacement divided by change in time
• x/t
4. V =
(Vi+Vf)/2
5. a =
Average v/t
6. Vf=
Vi + at
7. Average x =
Vi(t) + (1/2)at2
8. Vf2 =
Vi2 + 2ax
9. a =
(Vf - Vi)/t
10. Y=
X=
• ViSin
• ViCos
11. Gravitational acceleration
g = (average v)/t
12. Dynamics
Study of forces
13. Types of force
• Contact force
• Field force
14. Law of inertia
• If there is no net force acting on an object it will remain at rest or in uniform motion.
• If an object is in constant speed in a straight line its net force is 0.
15. Law of Acceleration
• If there is a net force acting on an object the object will accelerate. The acceleration is directly proportional to the net force & in the same direction.
• Acceleration is inversely related to the mass.
16. Law of Interaction
• For each action there is an equal, and opposite, reaction.
• Forces always occur in pairs.
17. Weight
• Fw=mg
• Downwards, toward center of the Earth
18. Normal Force/Perpendicular Force
• Contact force with surface
• Perpendicular with the surface
• Fn = mgCos
19. Frictional Force
• How hard the surfaces are pressed together.
• f = mN
• m = F/N
20. W =
• F(d)
• F(x)
• (ma)(x)
21. Potential
Ability to do work. Stored energy because of an objects position or condition.
22. Position
gravitational potential energy
23. Condition
compressed spring
24. Gravitational Potential Energy
• Scaler
• PE= mgh
25. Elastic Potential Energy
• PE = (1/2)Kx2
• K = N/m
26. Conservation of mechanical energy
v2 = 2gh
27. Power
• P = w/t
• P = (Fd)/t
• P = Fv
28. Work
W = FdCos
29. Kinetic Energy
KE = (1/2)mv2
30. Momentum
p = mv
31. Elastic Collision
• Sum of pi = Sum of pf
• Sum of (1/2)mv2 initial = Sum of (1/2)mv2final
32. Conservation of momentum
Ft = average p
33. Centripetal Acceleration
ai = v2/r
34. Centripetal Force
F = (mv2)/r
35. TF =
(9/5)TC + 32
36. TK =
TC + 273.15
37. Change in x =
(1/2)(vi + vf) average t
38. Mechanical Energy
ME = KE + (sum of)PE
39. Momentum
p = mv
40. Change in momentum
delta p = F(delta t)
41. wavg =
• average angular speed
• angular displacement/time interval
42. Fc =
(mvt2)/r
43. ac =
(vt2)/r
44. Fg =
• G(m1m2/r2)
• G=6.673 x 10-11

### Card Set Information

 Author: mfosse ID: 60683 Filename: Physics Updated: 2011-01-19 08:32:36 Tags: Terms Folders: Description: physics final review Show Answers:

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