Questions tagged [collision]
This tag is for questions relating to collision which is the interaction between two or more bodies that results in physical contact and an exchange of momentum between the bodies involved. When it happens, kinetic energy is often exchanged between the molecules’ translational motion and their internal degrees of freedom.
316
questions with no upvoted or accepted answers
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Two sonic booms colliding
If I theoretically created an experiment where I could create two sonic booms in directions such that the sonic "nose" is facing each other; what would happen?
more specifically:
Lets suppose I have ...
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What are pre-collisions and post-collisions in forces and momentum?
What are pre-collision and post-collision exactly? I assume it is before collision and after collision. I can not find an answer on google.
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Baryonic density in collision experiments
Does anyone know any way of estimating the net baryon density in collision experiments, e.g. in LHC, RHIC, or the upcoming ones at GSI-FAIR?
I have comes across many hand-waving arguments, sample -
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- 3,184
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Landau/Lifshitz "Mechanics" Particle Disintegration
I have attempted to derive Eq. (16.9) in Landau/Lishitz' "Mechanics", 3e. If someone could let me know if my derivation is on the right track, it would be greatly appreciated. I do hope that ...
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Why is mass nonnegative/is the nonnegativity of mass a convention?
In An Introduction to Tensor Calculus and Relativity, Lawden provides the definition of mass by considering a collision between two massive particles $p$ and $q$ with masses $m_p$ and $m_q$, ...
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What weight does a scale show when you throw an object onto it?
Imagine you have a bucket (cross-sectional area $A$) on top of a scale. Into the bucket you begin to pour sand (density $\rho$) with a mass flow rate of $\dot{m}$. The total weight of the sand in the ...
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How do I define the initial jerk and yank of a cylinder subjected to impact of a rigid body at it's base?
I am trying to solve an axisymmetric longitudinal wave propagation problem during the impact (collision) of a rigid body and the base of a cylinder. On one end the cylinder is rigidly bound to the ...
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Are the force frequencies the same in the discrete and continuous case?
Let's say I have an ideal gas of particles and the strike zone of area $\sigma=\pi d^2$ of a molecule of the molecule is what is the sub system considered. The end of the face of the cylinder is the ...
- 1,389
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1
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Collisions with Spheres (with Different radii) on a plane
How do you calculate the new velocity of the spheres after a collision when the spheres have different radii?
I thought you could just decompose the horizontal velocities and use the standard ...
- 61
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votes
1
answer
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In matter-antimatter interactions, what's the meaning of "touch"?
In this question, the top answer gave a seemingly good description of the particle interaction, but what exactly the interaction is seemed to be left unstated.
I've only the most rudimentary ...
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answers
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Rod hits rod - angular and linear momentum
I've been analyzing "ball hits a rod in space" type collisions, where speeding ball transfers part of its kinetic energy during elastic collision to the motionless rod, making it gain linear ...
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Locating point of impact "during" elastic collision (1D)!
We have two objects moving opposite to each other on the x-axis. They started to collide on the location $x = 0$ on x-axis.
We know that if object one $m_1 = 10 kg$, and $v_1 = 10 m/s$, and object ...
- 133
3
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Angle between velocities: Elastic collision question in 3D
I have been given a scenario of a proton (particle 1) travelling with u1 = 3î+ 4j–6k and a Helium-3 nucleus (particle 2) travelling with u2= 3î+ 4j–2k. The two particles collide and the proton (...
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Plastic deformation energy dissipation due to inelastic collision
I have been attempting to determine an analytical expression for the coefficient of restitution (or any similar collision parameter) for an inelastic collision. So far, I've looked at Hertzian contact ...
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Equivalency of conditions involving angular momentum of a rolling ball hitting a wall
(59th Polish Olympiad in Physics)
A ball of mass $m$, radius $r$ and a moment of inertia $I = \frac 25 mr^2$ is rolling on the floor without sliding with the linear velocity $v_0$. It hit the wall ...
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