Collisions Definition and 709 Threads

I am try to write a program with 3D spheres of different masses, radius, velocities and angles. Then use three dimensional elastic collision equations to find the spheres new velocities and angles. The problem is that i can't find any information or equations on 3D elastic collisions, only 1D...

Hi all, I was wondering if someone can help me, its been a while since I did classical mechanics, I have a question I would appreciate a little help from anyone! 2 objects with the same mass m and same velocity v have an inelastic collision . After the collision the 2 object system of...

Here's my problem: Car A (mass 970 kg) is stopped at a traffic light when it is rear-ended by car B (mass 1600 kg). Both cars then slide with locked wheels until the frictional force from the slick road (with a low mk of 0.23) stops them, at distances dA = 5.8 m and dB = 3.6 m. What are the...

An atom of mass m moving in the x direction with speed v collides elastically with an atom of mass 3m at rest. After the collision the first atom moves in the y direction. Find the direction of motion of the second atom and speed of both atoms (in terms of v) after the collision? Ans: mass m...

Cart A and B are equal mass ( 500 kg each) and have frictionless wheels. Cart A has a spring attached to its end with a constant 2000 N/m. Cart B has a spring constant attached to its end with a different spring constant. They both sit on a track with their spring facing each other, and are...

Suppose that a particle of mass m1 approaches a stationary mass m2 and that m2 > m1. a) Describe the velocity of m2 after an elastic collision--that is, one in which both momentum and kinetic energy are conserved. Justify the answer mathematically. b) What is the approximate momentum of m1...

Collisions-- Simple Algebra Problem... Hi, So... I think I'm having a simple algebra problem-- I was just wondering if someone could point out my error. This is the problem: Block 1, of mass m_{1}, moves across a frictionless surface with speed u_{i}. It collides elastically with block...

There's something in my theoretical mechanics handbook that i don't quite understand. Say you have an observer in a labratory watching 2 particles, one of which is in a state of rest (m_2) and the other one (m1) is moving towards it. the placevector of the center of mass of the system is...

Some gas is put into a gas syringe with a frictionless piston which does not allow the escape of any gas. The gas is initially at 20C and is then heated to 100C. The piston is allowed to move. At 100C a time will come when the piston will stop moving outwards and become stationary(this will...

Just a quick question, has any research instutute such as CERN managed to produce a new stable particle such as a neutron, or even produced and extra electron or proton as a result of colliding electrons and positrons at high energies? or are the untold ?new? but shortlived particles of such a...

A block of mass 2kg oscillates on the end of a spring in SHM with a period of 20ms. The position of the block is given by: x=(1.0cm)cos(wt+2pi). Another block of mass 4kg slides toward the oscillating block with velocity of 6m/s. The two blocks undergo a completely inelatic collision at time...

Hello, http://img219.exs.cx/img219/9273/lastscan19rc.jpg Can anybody explain how to startup the questions? Thank you!

Some people argue that a non-viscous gas could not result in a drag for moving objects because the kinetic energy could not be dissipated to the gas. However, this view neglects the fact that even if the gas molecules do not interact with each other (i.e. if the gas is inviscid), they still...

A meteor whose mass was about 10^8 kg struck the Earth (m = 6.0 X10^24 kg) with a speed of about 11 km/s and came to rest in the Earth. (a) What was the Earth's recoil speed? (m/s) (b) What fraction of the meteor's kinetic energy was transformed to kinetic energy of the Earth? (%) (c) By...

Given: Two gliders on an air track collide. Glider A has a mass of 0.269 kg and is moving in the +x direction with a speed of 1.07 m/s. Glider B has a mass of 0.330 kg and is moving in the -x direction with a speed of 0.675 m/s. a) What is the velocity of A and B if the collision is...

A proton is traveling to the right at 2.0E7 m/s. It has a head-on perfectly elastic collision with a carbon atom. The mass of the carbon atom is 12 times the mass of the proton. What are the speeds of each after the collision? i was trying to tinker with the fact that the KE before and after...

hello. i will be appearing for my a levs in a couple of months and this is a 'design experiment' question i need help with. i haven't ever designed an experiment and help will be appreciated. Question: 'Alpha particles from a particular radioactive source have a range of about 6 or 7 cm...

I am doing a Physics Lab where you have to measure initial and final velocities of two carts colliding in order to find the momentum. In this first category, you push a cart with a bumper into another cart with a bumper so that the first one completely stops right when it hits the second one. I...

Since the electron and the positron are indeed true "point charges" then why are the colliders able to make them collide head-on?

Currently I'm stuck on this problem: A pair of bumper cars at an amusement park ride collide elastically as one approaches the other directly from the rear. One has a mass of 450 kg and the other 550 kg. If the lighter one approaches at 4.5 m/s and the other is moving at 3.7 m/s, calculate...

A 450kg bumper car, with a spring which have a spring constant of 3x10^7 N/m collides at a speed of 2m/s with a solid wall. It gives a maximum compression of 7.7mm. At what speed will the car rebound of the wall? I am having trouble with this one... I don't know how to go about solving the...

Okay, here's the problem I'm working on... A .50 kg hockey puck moving at a speed of 5.70 m/s collides with a stationary hockey puck of equal mass. After the collisions, the first puck moves off in a direction 60 degrees to the left of its original direction, while the second puck moves off at...

An object collides elastically (perfectly) with another object (identical object) at rest. If it is not a head on collision how can i PROVE that the angle between them afterwards is 90 degrees? :confused: :bugeye: I have NO IDEA on what to do...it's been puzzling me and my friends for a...

A 3 kg mass moving laterally at 5 m/s collides with a 5 kg mass at rest. As a result the 5 kg mass travels at 2 m/s at a 26 angle counterclockwise from the direction of the motion of the initial mass. The 5 kg mass then collides with a 4 kg mass at rest. The 4 kg mass then leaves at 1 m/s at a...

The mass of the blue puck in the figure is 20.0% greater than the mass of the green one. Before colliding the, the pucks approach each other with momenta of equal magnitudes and opposite directions, and the green puck has an initial speed of 10.0 m/s. Find the speeds of the pucks after the...

On a frictionless horizontal air table, puck A (with mass 0.366 kg) is moving toward puck B (with mass 0.254 kg ), which is initially at rest. After the collision, puck A has velocity 0.119 m/s to the left, and puck B has velocity 0.655 m/s to the right. What was the speed of puck A...

Mass 1 is moving with an initial speed of v_1, which undergoes a completely inelastic collision with a stationary block mass 2. The two blocks then stick together and move at a speed v_2. The two blocks then collide inelastically with a third block mass 3. Assuming that the blocks slide...

Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving with a speed of 5.00 m/s. After the collision, the orange disk moves along a direction that makes...

Important! Charged Particle Collisions If two charged particles of equal mass and equal charge start from rest, repel, and travel in opposite directions, in what way is this an accelerating (non-inertial frame of reference)?

I have a bit of a problem with this question: A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is intitially moving along the x-axis with a velocity of 2.0 m/s. After the collision, the 0.20-kg puck has a speed of 1 m/s at an angle of 53...

i hav no clue how to do this problem... How fast can you set the Earth moving? In particular, when you jump straight up as high as you can, you give the Earth a maximum recoil speed of what order of magnitude? Visualize the Earth as a perfectly solid object. In your solution state the...

Hello there, Is it possible to have collisions in a AVL tree? My teacher asked me to write a hashing and collision resolution algorithm using AVL tree...maybe she means that i should store the tree node in a hashed array or something...what do u guys think?

I'm designing a program that simulates collisions in 2 dimensions, among other things. The collisions are between 2 circles, the collisions themselves are perfectly elastic. The mass of the two circles are known, and their X and Y velocity components are known. They also have specific radii...

A bullet of mass 0.11 kg and moving along the horizontal direction with a speed 1129.8 meters/sec hits a wooden block of mass 12.7 kg and gets embedded in it. Find the impulse acting on the block in meters/sec. Here's what I did: initial momentum = (0.11*1129.8) + (12.7*0) = 124.278 final...

There is a collision between two pucks on an air hockey table. Puck A has a mass of 0.031 kg and is moving along the x-axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.066 kg and is initially at rest. The collision is not head-on...

1) If you dropped a steel marble onto a steel plate and then dropped a steel marble onto a glass plate, which would you expect to bounce higher? Why? 2) Suppose that a projectile marble and target marble do not collide with their centers of mass equidistant from the floor. What problems in...

okay I think my brain is fried cause I've never before had so many problems in one day anyways... 1) Two billard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. A red one is moving upwards along the y-axis at 2m/s, and a green one is moving...

Sue is driving at 30m/s, she observes a slow moving van 155m ahead traveling at 5m/s. If Sue applies her breaks and accelerates at -2.00m/s^2 will there be a collision? How should I start to tackle this question?

I have some questions about solar sails. Basically, what happens to the photon? I am under the impression that the "sail" is a giant mirror that reflects photons striking it. Since photons have momentum, they impart some of this momentum to this mirror. Is this correct? But that must mean...

Hi I have a simple question about inelastic collisions. Clearly energy cannot be conserved because when two things hit, they will create friction, noise, heat and other forms of nonconservative forces, but my question involves momentum. When we solve a problem we conserve momentum, in any...

impulse and collisions I have one problem I've been trying to do, but I'm stuck on it. In this one, two ice skaters collide into each other. The specifics are as follows: Skater 1 (mass 58.96 kg) is traveling at 7.15 m/s. She then collides with skater 2 (mass 49.89 kg) who is at rest. During...

Why is KE not conserved in inelastic collisions?

Heres the question: Assume an elastic collision (ignoring friction and rotational motion). A cue ball initially moving at 3 m/s strikes a stationary eight ball of the same size and mass. After the collision the cue ball's final speed is 1.4 m/s. Find the eight ball's angle with respec...

Why is Kinetic Energy lost in an inelastic collision but not in an elastic collision?

A 5.5 gram bullet is fired into a block of wood with a mass of 22.6 grams. The wood block is initially at rest on a 1.5 meter tall post. After the collision the wood block and the bullet land 2.5 meters from the base of the post. Find the initial speed of the bullet.

A 5.5 gram bullet is fired into a block of wood with a mass of 22.6 grams. The wood block is initially at rest on a 1.5 meter tall post. After the collision the wood block and the bullet land 2.5 meters away from the base of the post. Find the initial speed of the bullet. (After collision the...

Hi all, I came across a problem on collisions on one of my professors old exams. The problem is: http://home.comcast.net/~msharma15/problem_2.jpg The way I am trying to approach it is by applying the conservation of linear momentum and energy, but the problem is that I still get left...

Is the coefficient of restitution of two particles a measure of the percentage of kinetic energy retained after a collision? My textbooks and Google are no help. If it isn't, what is it a percentage of?

A glider of mass 0.156kg is moving to the right on a frictionless, horizontal air track with a speed of 0.9m/s . It has a head-on collision with a glider 0.293kg that is moving to the left with a speed of 2.25m/s . Suppose the collision is elastic. We've haven't covered elastic collisions...

I got up this morning, and decided I was going to try to calculate this. So here is what I asked. Given 2 stationary bodies, starting some distance apart, of different mass, where would they collide in respect to one another? I tried using Newton's gravity formula to calculate the force of...