Questions tagged [momentum]
In introductory mechanics, the momentum of a particle is its mass times its velocity. In electrodynamics, the momentum of a field is proportional to the cross-product of the electric field with the magnetic field. In special relativity, momentum is generalized to four-momentum.
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Direction of impulse
My textbook has the following problem:
A batsman deflects a ball by an angle of 45° without changing the initial speed which is equal to 54 km/h. What is the impulse imparted to the ball? (Mass of ...
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Ambiguity of Newton's Second Law of Motion and Relation of it with other theorems [closed]
I am sharing some questions along with my personal views on them regarding mechanics.
1. What is Newton's second law of motion given by himself?
I personally understood from the books that Newton has ...
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A 1m diameter sphere contains a Avagadro Number (mass 2.015g) of ideal gas particles of mean velocity 550m/s, what is the pressure in the sphere? [closed]
I get an answer of 1.552 kPa using surprisingly simple mathematics and wonder if my method is valid. I used
P(sphere) = M(gas) * v(particles)^2 / r(adius sphere)^3 / 4 / Pi()
Can it be that simple.
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Noether's theorem by a taste of logic [closed]
I am a mathematician and I asked this question briefly and my question became closed, may be - I don't know - because physicists don't used to apply the method of "proof by contradiction". ...
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How does the direction of the change in momentum of the object change during the motion?
In the case of an object's movement resembled in this graph, as the gradient is decreasing, a decrease in velocity occurs.
According to the formula
$$p = mv$$,
The momentum is directly proportional to ...
