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Newton’s 1st law
Objects will remain at rest or moving at a constant velocity unless acted upon by an unbalanced force.
Newton’s 2nd law
F=ma
Newton’s 3rd law
All forces come in pairs equal in magnitude and opposite in direction.
1st postulate of special relativity
The laws of physics are the same in all inertial frames of reference.
2nd postulate of special relativity
The speed of light in a vacuum is the same as measured by all observers in any inertial frame of reference.
Shortcut equation for angular momentum velocity down an inclined plane
v=sqrt{(4gh)/3}
Buoyancy force volume of displaced fluid
volume of the object
The buoyancy is _____ in _____ to the weight of fluid displaced
equal, magnitude.
The _____ in ___ of an object in the air vs
difference, weight.
Conditions of static equilibrium
The sum of all forces acting in the x-direction must be zero (∑Fx = 0), the sum of all forces acting in the y-direction must be zero (∑Fy = 0), and the sum of all torques acting on the object must also be zero (∑τ = 0)
Note 
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