Is energy always a constant when the momentum is constant?
53622
Does momentum change when Kinetic energy changes?
101888
Least action principle : is $ \delta \frac{dx}{dt} = \frac{d \delta x}{dt} $ always true?
114225
If movement is relative, why is it said that moving objects have kinetic energy?
12818
In calculating work done by a constant force over a constant distance, why doesn't the subject's initial velocity matter?
29728
Does the vacuum in QFT have nonzero energy or not?
94615
Is the change in kinetic energy of a particle frame independent?
53455
Relativistic speed/energy relation. Is this correct?
153690
is there any uncertainty on the free particle with a definite momentum $\vec p$?
122561
Is the energy always discrete?
137189
What's the deal with momentum in the infinite square well?
110980
Why is momentum conserved in inelastic collisions? How is it related to momentum-impulse theory?
17754
Intuitive Understanding of the constant "$e$"
18144
Does a nonzero Poynting vector mean that there is propagation of energy?
147388
Why do these two ways of understanding constant acceleration give different results?
111394
Does conservation of momentum really imply Newton's third law?
17121
Kinetic energy with respect to different reference frames
93270
is that function must be constant under the following conditions