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Zor Shekhtman
79 followers -
Mathematician by education, computer software specialist by profession and an educator by inspiration.
Mathematician by education, computer software specialist by profession and an educator by inspiration.

79 followers
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Law of Conservation of Momentum: in the absence of external forces the momentum of a system is constant.
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The final momentum of an object is the combined effect of all impulses acting on it in an integrated fashion.
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What happens when the rocket's 1st stage separates from the 2nd?
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A few not so easy problems on superposition of forces.
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Solving a few easy problems on superposition of forces.
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Superposition allows not only to combine two forces into one, but also to represent one force as a sum of two.
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If two or more forces act on the same object at the same time, the object moves identically to the movement caused by only one force, that is a vector sum of all individual forces acting on an object.
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Simple but generic problems with constant acceleration along the straight line and uniform rotation.
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A cup on a table pushes table down, table pushes the cup up. Are these two forces balance each other? No!
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Any change in velocity of an object must be caused by something that we can call the force.
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