Physics 1

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 Author: misbah ID: 220295 Filename: Physics 1 Updated: 2013-05-19 22:26:05 Tags: kinematic equations nvelocity nnewtonian mechanics nenergy nmomentum ncollisions Folders: Description: chapters 1-3 Show Answers:

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1. Velocity
2. Acceleration
3. X and Y components of initial velocity
v= vocosθ

vx = vosinθ
4. Resultant force
5. Gravitational force
6. Torque

• r = distance between fulcrum and force
• θ = angle between force and lever arm
7. Centripetal force
8. Centripetal acceleration
9. Kinetic friction

• μk = coefficient of kinetic friction
• F= normal force
10. static friction

anything above that is kinetic friction
11. Potential energy
12. Total mechanical energy
= constant

• When there's no friction/air resistance
13. Work done by non conservative forces
14. Work
W = Fdcosθ
15. Power
•
• J/s = watts
16. Work Energy theorem
17. Momentum

units: kg m/s
18. Impulse

19. Elastic collisions - objects dont stick
• objects dont stick. Momentum and KE are conserved.
20. Inelastic collisions
• Kinetic energy is lost in the form of heat, light or sound therefore final KE is less that initial.
• Momentum is conserved
21. Completely Inelastic collisions
• Objects stick together
• Kinetic energy is not conserved.
• Momentum is conserved, objects have the same velocity after combining.

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