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displacement formuli
∆x=v i ∆t+  a (∆t) 2
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displacement vs distance
- displacement= net change in location
- distnce= travel path lentght
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Newtons first law
An object at rest remains at rest, and an object in motion continues in motion with constant velocity (that is, constant speed in a straight line) unless the object experiences a net external force.
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Newtons Third Law
If two objects interact, the magnitude of the force exerted on object 1 by object 2 is equal to magnitude of the force exerted on object 2 by object 1, and these two forces are oppisate in direction.
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coeficiant of static friction
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coefficiant of kinetic friction
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Force of friction
Ff= μFn
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Work-Kinetic energy theorem
W= ∆KE
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Elastic potential energy
 - K=spring constant in N/m
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Mechanical energy
ME=KE+PE
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Conservation of mechanical energy
MEi=MEf
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Impulse momentum theorem
F∆T=∆p=mvf -mvi
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conservation of momentum
Pi=Pf
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Keplers first law
Each planet travels in an elliptical orbit around the sun, and the sun is at one of the focal points
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Keplers second law
An imaginary line drawn from the sun to any planet sweeps out equal areas in equal time intervals
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keplers third law
the square of a planets orbital period (T 2) is proportional to the cube of the average distance (r 3) between the planet and the sun, or
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period of an object in circular orbit
 - Period= the time it takes for one orbit

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Newtons Law of Universal Gravitation
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Isovolumetric
- No work done
- ∆V=0
- so P∆V=0 and W=0
- Therefor ∆U=Q
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First Law of Thermodynamics
∆U=Q-W
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Isothermal
- No change in temperature or internal energy
- ∆T=0 so, ∆U=0; therefore, ∆U=Q-W=0; or
- Q=W
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Abiabatic
- no energy transferd as heat.
- Q=0, so ∆U= -W
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Efficiancy of a heat engine
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Idele gases
 - A gas behaves like an Idele gas when Tempeture is high and presure is low
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