All Questions
Tagged with relative-motion mass
8
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5
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850
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Does kinetic energy rely on the observer mass too since velocity is relative?
There is no 'correct' inertial reference frame according to relativity. Objects are only 'in motion' relative to an arbitrary inertial reference frame. So let us take the following example. A person ...
- 1,009
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If the escape velocity for a body that is very close to a BH is near $c$ but not $c$ can it move away a little bit before it falls inside the BH?
The escape velocity from a common gravtational attractor means that a body lounched away from the attractor will never turn back. But in the case of a BH at the event horizon this escape velocity is $...
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Should the velocity increase or decrease?
Suppose some projectile is traveling along the positive $x$ direction at a velocity $v$. While moving it is emitting particles, and thus losing mass. If the particles are being emitted in the same ...
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Is there a physics law according to which, in general, the smaller an object is, the faster it moves? [closed]
I have always felt, in general, that dogs run faster than humans and that birds fly faster than dogs and than bees can fly or at least drift by the wind faster than birds and that plant seeds would ...
user256067
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Changing mass and relative motion
Sand is pouring vertically on a cart at J [kg/sec], from negligable hight. The cart is standing on top of a frictionless surface. What force F do we have to apply to the cart for it to move at a ...
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Can absolute speed be determined by an object's mass?
It's been said that nobody can actually know how fast the Earth is moving through space, because a reference point is needed to determine absolute velocity. But if mass increases as speed increases, ...
- 143
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5
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Can we find actual rest mass of things on Earth
Earth moves around the Sun and the Sun moves around the galaxy and the galaxy moves with unknown speed and direction. We have speed so the mass of us all altered.
Can we know the real rest mass? If ...
- 898
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Are there any good references on the "gravitational" curvature of spacetime of a moving mass being distorted due to special relativity?
In this Wikipedia paragraph suggesting an explanation for the phenomenon of inertia, it claims:
Another physicist, Vern Smalley, has derived the Lorentz transformation for mass by assuming that the ...
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