What is Inelastic: Definition and 494 Discussions

Hi everyone! I recently read a problem in a university textbook that read about an inelastic collision. There are two pucks (hockey?) on the ice, one at rest. Both the same mass, one approaches the other at a velocity and when they collide they stick together and both move off with a velocity...

Homework Statement Q5. A 1500kg car is traveling east @ 15.0m/s, when it crashes into a 2500kg truck traveling in the same direction @ 12m/s. The car has a velocity of 13m/s affter the collision. Assuming this is an inelastic collision, determine: a) speed of the truck just after the collision...

In this paper ("Molecular Vibration Spectra by Inelastic Electron Tunneling" by J. Lambe & R.C. Jaklevic Phy.Rev. Vol 165, Article 3), the author showed that when external voltage is applied across a metal-insulator-metal, the current passing through the insulator is shown to be: I(V) =...

Conservation of Mechanical Energy and Momentum in total inelastic collisions? In an inelastic collision, such as a bullet getting stuck in a block hanging on a string, has two types of conservations? -Total Inelastic Collisision Conservations: (1) Conservation of Mechanical Energy: Uo+Po =...

Homework Statement I'm trying to build a "juggling" robot but I'm getting stuck on the dynamics of catching. The robot follows the dynamics and terminology of a similar one presented in the attached paper (equation 1). Basically, there is a circular ball flying through the air which lands (and...

Just had a general question involving the change in Kinetic Energy in a Inelastic collision between 2 cars going towards each other at equal velocity. ΔK = K - Ko However for the final K, is the mass the combined mass of both cars since they are now moving together, or is it still the same...

:biggrin: Hello! I know that inelastic demand is normally linked with necessities. However, if I have a superior good, and there´s an increase in price, customers still would buy the product because of the prestige, the brand. So, I am writing a paper about a firm and my professor wants me...

Heat or deformation cannot contribute to velocity here, as per the view of conservation on momentum. So how is it that momentum is conserved but kinetic energy is not given a perfectly inelastic collision? The two masses stick together. There is no intrinsic means of expressing lost due to...

Homework Statement I did a lab today in Physics in which we launched ball from a spring loaded cannon directly into a pendulum that captured the ball, held it, and swung upwards with it (representing a totally inelastic collision). One question that confuses me: > How much work did you do in...

Hi, I am trying find equations for continuous "stretchy" collisions, in other words, I have two perfectly round objects of known mass, radius, and velocity, and want to collide them and be able to have them squish together and then bounce apart. I am aware of the method of solving for the...

A light passenger vehicle weighing 1470 N collides with a train engine weighing 1.23 x 105 N, which was being moved from one rail siding to another. The train engine and the vehicle were entangled after the accident and from your measurements you have been able to determine they skidded 15 m...

Homework Statement An atom of mass M is initially at rest in its ground state. A moving (nonrelativistic) electron of mass m_e collides with the atom. The atom+electron system can exist in an 'excited state' in which the electron is absorbed into the atom. The excited state has an extra...

Hi, I have a problem which I can't figure out.:confused: Let us take a sphere which is rolling purely at a constant velocity vo. Now, if the sphere were to collide inelastically with a wall, with coeff. of restitution = e. Then what is the time after which the sphere starts pure rolling...

Homework Statement A ball of mass 4.5 kg is moving 16 m/s east when it collides with a stationary 6.2kg ball, which moves at a velocity 10 m/s after the collision. Was this an elastic or inelastic collision? Explain your choice. Va = 16 m/s Ma = 4.5 kg Mb = 6.2 kg Vb' = 10 m/s...

Please check my work for the first question. The second and third questions, I'm not 100% sure how to solve them. A ssume that a cement truck with a mass of 10,000 kg hits you while you were stopped at a traffic light, and that you are driving a Smart car with a mass of 750 kg. 1. If the...

Homework Statement A 15.0 kg toy cart is traveling at 5.5 m/s to the right when it collides head on with a 10.0 kg cart traveling at 4.0 m/s to the left. The objects collide and stick togethere. The coefficient of friction between the wheels of the cart and the floor is 0.40. How far will the...

I don't understand how inelastic collisions still conserve momentum. If kinetic energy is not conserved, velocity must change, and the mass obviously doesn't change, how can momentum be conserved? It makes no sense to me at all.

Homework Statement A ball of clay collides with a block that sits on a frictional surface. If the collision proceeds in 1 dimension and the clay sticks to the block, how far does the block/clay system slide before coming to a stop? The clay has mass m = 50 kg, the block as mass M = 100 kg...

This likely represents a physical impossibility or contradiction, but I'd like to know that or, if not, understand what is going on at a deeper level. Let's say we have a perfectly rigid and immovable wall. We have a perfectly rigid (doesn't compress) ball moving toward it at 10 m/s. The...

Homework Statement A particle of mass m_{1} and speed v_{1} collides with a second particle of mass m_{2} at rest. If the collision is perfectly inelastic what fraction of the kinetic energy is lost in the collision? Comment on your answer for the casses that m1 is much much smaller than m2...

There is a gummy bear stuck to the ceiling where I work. When it hit the ceiling, some of its kinetic energy would be transformed into thermal energy and some into sound. I'm wondering if some is also stored as potential energy in deforming the gummy bear slightly. Also, are there any other...

Homework Statement A mass M slides down a smooth surface from height h and collides inelastically with the lower end of a rod that is free to rotate about a fixed axis at P as shown below. The mass of the rod is also M, the length is L, and the moment of inertia about P is ML2/3. The angular...

From conservation of momentum and energy, it turns out that if two objects bump into each other and end up moving at the same speed, energy must have been lost. I know the formulas and calculations, but what physically happens at the contact site? Why cannot one object just push the other one...

Homework Statement [/B]A bullet traveling at 100 m/s strikes the wall inelastically. It is observed that the bullet's temperature rises by 10 Kelvin due to the collision. Find the specific heat capacity of the bullet if all of the bullet's energy goes into heat. Homework Equations ΔQ=mcΔT...

Homework Statement a ball falls in a truck loaded with sand with velocity v having horizontal and vertical component. The angle under which it enters the truck is α, the mass of the ball is m of the track loaded with sand is M. What happens with the momentum after the collision? The...

hi everyone. I'm working on a physics engine as part of a game I'm making, a hobby project. Up until this point I've implemented inter object collisions in a rather quick and dirty manner. Whenever something moves into something else, it is simply teleported back out to the edge. This...

Homework Statement A 2.0 kg block slides along a frictionless surface at 1.0 m/s. A second block, sliding at a faster 4.0 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.0 m/s. What is the mass of the second block? Homework...

Homework Statement In a movie stunt, a 65 kg skier starts from a rest position at the top of a hill 30m high. She slides down the hill to the bottom, where she collides with a 45 kg stationary skier. The collision is completely inelastic. Find the final velocity of the skiers. Homework...

Lets say that I have a cart on a track with silly putty on the end. This first cart is moving with an initial "x" velocity. There is another cart about a foot ahead of it with sillyputty on its bumper also. (Both carts have the same mass) This cart has an initial velocity of zero. Of course...

Alright, I did all the work for this problem, but do not know the correct answers and therefore cannot check my work with 100% confidence. So if somebody could look it over and let me know if I did everything correctly or not, I'd appreciate it. The answer I calculated for part e seemed kind of...

Homework Statement Okay, we have a lab about elastic and inelastic collision, and we have to do it in an air table/spark table that generates dots (can be like ticker tapes). We have to determine Momentum (P and P') and Kinetic Energy (Ek and Ek') Please view my attachment. (' = after...

Homework Statement Leonard wants to know how fast he can throw a ball, so he hangs a 2.3 kg target on a rope from a tree. He picks up a 0.5 kg ball of clay and throws it horizontally against the target. The clay sticks to the target and the clay and the target swing up to a height of 1.5m...

Here are 3 problems I have been working on. Any help would be very much appreciated. Thank you in advance! Homework Statement Two inelastic balls are traveling toward each other with velocities -4m/s and 7 m/s and they experience an elastic head on collision a)obtain the velocities...

hi experts Is collison of cars on road an inelastic collision? because friction force is present - please help me in this regard.

Hi Experts two cars collide on road - it cannot be elastic collision but will it be a inelastic? and does in real life we can have elastic and inelastic collision.

So why is kinetic energy not conserved while momentum is conserved in a perfectly inelastic collision? Where does the kinetic energy go when the objects collide perfectly inelastically? Why does conservation of momentum happen? Is momentum a type of energy? Thank you for your help.

Homework Statement A 1300-kg car collides with a 15,000-kg truck at an intersection and they couple together and move off as one leaving a skid mark 5m long that makes an angle of 30.0° with the original direction of the car. If μk = 0.700, find the initial velocities of the car and truck...

Homework Statement 2000 kg car traveling west at 75 km/h and a motorcycle traveling south at 108 km/h weighing 1000kg. assuming the collision is completely inelastic, what is the velocity of the vehicles after the collision. Homework Equations I know that the Pi, system = Pf, system...

Homework Statement A blue car with mass mc = 499 kg is moving east with a speed of vc = 21 m/s and collides with a purple truck with mass mt = 1283 kg that is moving south with a speed of vt = 11 m/s . The two collide and lock together after the collision. What is the angle that the...

Elastic and Inelastic neutrons scattering..! How I can find the energy lost by the neutron in elastic scattering and inelastic scattering, if we assumed its isotropic scattering in the center of mass?

Elastic and Inelastic neutrons scattering..! How I can find the energy lost by the neutron in elastic scattering and inelastic scattering, if we assumed its isotropic scattering in the center of mass?

Homework Statement Values from previous problem: Pre-collision: v2kg=6m/s -->, v3kg=3m/s <-- Post-collision: v2kg=2m/s <--, v3kg=5.67m/s --> Collision time: 0.2 sec Homework Equations F=mA=m(Δv/Δt) The Attempt at a Solution My instinct to solve this was to use the pre-collision values to...

Homework Statement Two objects moving in opposite directions with the same speed undergo a totally inelastic collision, and half the initial kinetic energy is lost. Find the ratio of their masses, m1/m2. Homework Equations m1v1+m2v2=(m1+m2)vf The objects are moving in opposite directions...

Hi everyone, I am a student of A'Levels and I am having a problem with a Question regarding inelastic collision the question is as follows: Whenever two bodies collide and they stick together the collision is essentially inelastic. Explain? Can anybody help me out with this this is a...

Homework Statement Now the racquet ball is moving straight toward the wall at a velocity of vi = 12.4 m/s. The ball makes an inelastic collision with the solid wall and leaves the wall in the opposite direction at vf = -8.2 m/s. The ball exerts the same average force on the ball as before...

Homework Statement Two gliders move toward each other on a frictionless linear air track. Glider 1, mass = 0.5kg , velocity = 2m/s (to the left) Glider 2, mass = 0.3kg , velocity = 2m/s (to the right) After collision, glider 2 moves away (to the left) with final velocity of 2m/s...

I'm trying to figure out how to calculate collision response in a simulation I'm working on. Here are the details: 2D Objects are made of axis-aligned edges and do not rotate Object masses are whole numbers Collisions are completely inelastic No friction Collision/separation times are...

Hey everyone, Reviewing material for a technical interview and I have stumbled into some problems that I sadly have issues with. Old review for me :D. Any help would be appreciated. I can follow up through the conservation of energy equation. However at the in an elastic collision...

http://session.masteringphysics.com/problemAsset/1007938/22/6318.jpg Two cars, both of mass m, collide and stick together. Prior to the collision, one car had been traveling north at speed 2v, while the second was traveling at speed v at an angle phi south of east (as indicated in the figure)...

I'm trying to use the equations on http://teachers.web.cern.ch/teachers/archiv/hst2002/bubblech/mbitu/applications_of_special_relativi.htm" and I have solved the following. Is it correct?