# What is Collison: Definition and 36 Discussions

George Collison (1772–1847) was an English Congregationalist and educator associated with Hackney Academy or Hackney College, which became part of New College London—itself part of the University of London.

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1. ### I Solving for Angular Velocity After a Disc Collision

Hello to everyone, first of all shame on me I has to ask and can not figure out it by myself... The problem is I am trying to code game where two homogenous discs with same mass and same diameter, no fricition due to gravitational forces, can collide. I can figure out the speed and direction...
2. ### Elastic collision: Determine the deceleration

My approach so far is to use F = ma. The forces acting on the block in the horizonital direction are friction and the force of the spring. Choosing the direction towards the spring as the positive axis. Therefore: F = ma -Fr - kx = ma Solving for a = (-Fr - kx)/m If I plug in values I end up...
3. ### Conservation of energy/Angular momentum for elastic collison

Homework Statement A uniform thin rod of Length L and mass M can freely rotate about a point 0 and is at rest in at the vertical. A ball of mass m on a light string of length R, which is also attached about the pivot is deflected by a small angle from the vertical and let go of. If the...
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### B Are there any SPH planet collision simulators?

Hello, I've been searching for a collision simulator for planets that uses SPH. I haven't found any though. US2 doesn't use SPH collisions. But does anyone know any that are publically available? Example video below: And a channel with a few: https://www.youtube.com/user/joetaicoon/videos
5. ### I Is mass conserved in relativistic collision?

For a particle , E2 = (pc)2 + (moc2)2 and for a system of particle , (ΣE)2 = (Σpc)2 + (Σmoc2)2 so in that way before a collision, (ΣEi)2 = (Σpic)2 + (Σmoic2)2 and after , (ΣEf)2 = (Σpfc)2 + (Σmofc2)2 and as far as i know energy and momentum is conserved . so that means ΣEi=ΣEf and also Σpi=Σpf...
6. ### Tennis Ball Collision Homework Solution

Homework Statement A 0.060 kg tennis ball, moving with a speed of 2.50 m/s has a head on collision with a 0.090 kg ball initially moving toward it with a speed of 1.00 m/s. Assuming a perfectly elastic collision, what is the speed and direction of each ball after the collision? Homework...
7. ### Momentum After Inelastic Collison

Homework Statement Two hockey pucks are sliding across the ice in the same direction. One has a momentum of 35 kg*m/s. The other has a momentum of 7 kg*m/s. After the collision, the pucks stick together. What is the momentum of the pucks after the collision? Homework EquationsThe Attempt at a...
8. ### How Does Elastic Collision Affect Momentum and Force in Racquetball?

Homework Statement A racquet ball with mass m = 0.224 kg is moving toward the wall at v = 15.1 m/s and at an angle of θ = 28° with respect to the horizontal. The ball makes a perfectly elastic collision with the solid, frictionless wall and rebounds at the same angle with respect to the...
9. ### E+e- collison Resonance peaks cross-section partial widths

Question: The Breit-Wigner cross-section for a resonance R is ## \sigma_{i \to f} =12\pi\frac{\Gamma_{R\to i} \Gamma_{R\to f}}{(s-M^{2})^{2}+M^{2}_{R}\Gamma^{2}_{R total}}## [1], where ##s## is the com energy squared, ##M_{R}## is the mass of the resonance , ##\Gamma_{R total}## is the total...
10. ### What are the 11 possible outcomes of a collision between two objects?

So, I had to complete this chart for an assignment in class regarding momentum and possible situations that could result from a collision between two objects. For the outcomes or results column of the chart there are 11 different blanks (impossible or possible) that could possibly occur and I...
11. ### What Value Must n Be for a Glancing Elastic Collision to Occur?

1. Two masses, m and M are involved in a glacing collision as seen below where θ and ø= pi/2. If M = nm what must n be such that the collision is elastic? Remember if θ+ø=pi/2 then cos(θ)=sin(ø) and cos(ø)=sin(θ)...
12. ### Relativistic Electron/Positron collison.

Homework Statement In an electron positron collider, an electron and a positron are collided such that their momenta in the lab are equal and opposite. In such a collision, the electron and the positron annihilate and produce a muon and an antimuon. The rest mass of a muon is 106MeV/c^2...
13. ### Finding speed of objects after elastic collison

Homework Statement Homework Equations 1/2m1v12 + 1/2m2v22 = 1/2m1v1f + 1/2m2v2f m1v1 + m2v2 = m1v1f + m2v2f v1 - v2 = -(v1f - v2f) The Attempt at a Solution So I solved the momentum of conservation for the final velocity of object 1. I then plug that equation into the third...
14. ### Which Vehicle Has a Greater Impact Force: 1500kg at 50mph or 2000kg at 30mph?

This isn't officially a homework question, just a problem/discussion that has arisen at work... so, basically we are looking to find out which would have a greater impact:- a 1500kg vehicle traveling at a constant speed of 50mph or a 2000kg vehicle traveling at a constant speed of...
15. ### Quetions of body under collison

Hi all http://store2.up-00.com/June12/pG127901.jpg V^2 = u^2 + 2as V = 8.85 m/s which will be intial veloctiy befor hits the second body Bu using e(u1 - u2 )=V2 -V1 m1u1 +m2u2 =m1v1+m2v2 for the body which is 20 N mass 20.3 u1 = 8.86 0m/s V1 after collision = 0 m/s...
16. ### What is the difference between proton-electron collison adn electron capture?

Is it the same thing? If not what is the key difference between the two and what conditions would make the weak interactions governing the two more favourable than the other one?, (My thoughts are along the lines of , that proton-electron collision is referring to free electrons or free...
17. ### [Nucl Physics]alpha particle and beryllium atom collison

Homework Statement what is produced when an alpha particle reacts with a beryllium atom Homework Equations The Attempt at a Solution i think that carbon 12 and a neutron is produced. please help me.
18. ### High Energy Electron- Proton Collison

I was wondering What would happen if one was to smash a High Energy Electron with a High Energy Proton let's say they both have a kinetic energy of 1 Tev.
19. ### Kinematics Collision Question: Find Minimum Separation and Sketch

Kinematics Collison question Homework Statement The engineer of a passenger train traveling at 84 m/s sights a freight train whose caboose is 480 meter ahead on the same track. The freight train is traveling in the same direction as the passenger train with a constant velocity of 60 m/s. The...
20. ### What is the Velocity of Object A After an Inelastic Collision?

Homework Statement Object A, which has a mass m and a velocity v0i, collides head-on with object B, which has a mass 2m and a velocity 1/2v0j. Following the collision, object B has a velocity of 1/4v0i. -Find the velocity of object A after the collision. -Express the change in kinetic...
21. ### What Happens When a Photon Collides with a Proton in Glass?

say we have a slab of glass and an incoming photon , and it hits a proton in the slab of glass , will it get absorbed and re-emitted or will it oscillate the proton , what will happen , Any input will be much appreciated
22. ### What is the speed of two objects after a perfectly inelastic collision?

Homework Statement A 6 kg object moving with a speed of 9.9 m/s collides with a 19 kg object moving with a velocity of 7.2 m/s in a direction 24* from the initial direction of motion of the 6 kg object. What is speed of the two objects after the collision if they remain stuck together...
23. ### 1-D Perfectly Elastic Collison PLEASE CHECK THANKS

1-D Perfectly Elastic Collison PLEASE CHECK! THANKS Homework Statement Mass m1 is moving to the right at a velocity of 17.6m/s. Suddenly it strikes a stationary ball. The stationary ball has a mass of .685kg. The collision is perfectly elastic and 1 dimensional. The collision forces m2 to...
24. ### What is the rest mass of the composite particle after a relativistic collision?

Homework Statement A stationary particle of rest mass 2m_{0} is hit by a particle of rest mass m_{0} and kinetic energy 2m_{0} c^{2}. I must find the rest mass of the composite particle afterward.Homework Equations Conservation of momentum and energy. The Attempt at a Solution I worked...
25. ### Momentum collison of two cars.

Homework Statement Two cars collide as shown. Car s1 is initially moving along the x-axis at speed v1 and car 2 is stationary. The final speed of car one is 10 m/s and goes 30 degrees north of x-axis. The mass of car 2 is 2000kg and goes 6 m/s at 44 degrees south of x-axis. What is the mass and...
26. ### Collison problem, bullet embeds itself inself in a block

Homework Statement A bullet of mass 0.125 kg traveling horizontally at a speed of 150 m/s embeds itself in a block of mass 2.5 kg that is sitting at rest on a nearly frictionless surface. What is the speed of the block after the bullet embeds itself in the block? Homework Equations...
27. ### Energy of Kaon in Lab Frame: Relativistic Collision

Homework Statement kaon of ss 498 MeV/c^2 traveling through laboratory decays into two pions each of mass 137MeV/c^2. Onee of the pions is produced at rest in the lab frame. What is the energy of the kaon in the lab frame? Homework EquationsI think you need to consider 4 vectors for the...
28. ### Elastic collison of 2 moving object

a .900 kg object is moving east at 2.8 m/s. a 1.30 kg object is moving west at 1.4 m/s. If the collision is perfectly elastic find the velocities after the collision. (neglect friction) I know momentum and kinetic energy is conserved but I am really clueless as to what to do. Please help me...
29. ### 2-D collison question involving one moving objecy and one stationary object

Homework Statement A 20.0kg curling rock is moving due east when it collides with a stationary rock of equal mass. After the collison the first rock is traveling at 1.50 m/s 47 degrees north of east, and the other rock is traveling 1.71 m/s 40 degrees south of east. Determine the velocity of...
30. ### Electron collison with an atom

Hi guys, I am new to this forum and decided to join when i stubled upon a similar thread to the one i am about to post. The question i am pondering is this: In the question, the three lowest energy levels of an atom of the target material in the xray tube are shown and the question is...
31. ### Understanding Momentum in Collisions: Truck vs. Car Velocity Change

If a truck and a car collide will they both have the same change in velocity? Since the momentum before has to equal the momentum afterward wouldn't the change in the velocity also be equal? Thank you. Stephen
32. ### Solving an Elastic Collision Problem with Given Force-Time Data

Homework Statement A 10-kg mass moving at a speed of V_{1} in a positive direction collides elastically with a 2-kg mass which is initially at rest. The magnitude of the net force that acts on each object during the collision is shown in the figure. Find the initial velocity, V_{1}, of the...
33. ### What is the speed of the ball after colliding with a bat at 1.7 m/s?

A ball and bat, approaching one another each with the same speed of 1.7 m/s, collide. Find the speed of the ball after the collision. (Assume the mass of the bat is very much larger than the mass of the ball, a perfectly elastic collision, and no rotational motion). so i am going to use...
34. ### What is the maximum height reached by the other ball after collision?

Two identical steel balls, each of mass 1.4 kg, are suspended from strings of length 36 cm so that they touch when in their equilibrium position. We pull one of the balls back until its string makes an angle q = 36° with the vertical and let it go. It collides elastically with the other ball...
35. ### Calculating Post-Collision Speeds of Billiard Balls

:confused: I was wondering if someone can help me with this problem: Two biilard balls of equal mass undergo a perfectly elastic head-on collison. If the speed of one ball was initially 2.00 m/s and of the other 3.00 m/s in the opposite direction, what will be their speeds after the...
36. ### Solving Collison Equations: Step-by-Step Guide

Can anyone help show me the process of solving the equations (m1*v1)+(M2*V2)=(m1*v1')+(M2*V2') (.5m1*v1^2)+(.5M2*V2^2)=(.5m1*v1')+(.5M2*V2') to get the equations ------(m1+M2) (2M2v) v1'= --------- v1 + ----- V2 ------(m1+M2) (m1+M2) -------(2m1) (M2-m1)...