Collisions Definition and 709 Threads

Is it to possible to use the special case of elastic collisions in one dimension with bodies that posses different mass. Ordinarily I know that if the body has same mass the velocity of the bodies will simply be exchanged but is the fact also hold for body with different masses? v_1 - v_2 =...

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...

Homework Statement A moderate force will break an egg. However, an egg dropped on the road or sidewalk usually breaks, while one dropped on the grass usually does not break. This difference is because for the egg dropped on the grass: A. the change in momentum is greater B. the change in...

Homework Statement A bicycle wheel of mass M (assumed to be concentrated at its rim) and radius R is mounted horizontally so it may turn without friction on a vertical axle. A dart of mass m0 is thrown with velocity v0 as shown above and sticks in the tire. ( A top-view is shown to the right.)...

Perfectly elastic collisions problems usually involve calculating the final velocities of two masses from their initial momenta. Trying to derive such formula I got a different result, a shorter formula to solve the same problem: Take two masses a and b with their respective initial...

Homework Statement We are only given variables in this problem, that is: m1 travels at V, collides with 2m which is at rest results in m going off at 45° at V1 2m also goes off at 45° down at V2 Calculate V1 and V2 in terms of V Homework Equations Ʃρx-initial=Ʃρx-final...

Homework Statement A 10 g ball going at a speed of 5 m/s is kicked, and flies off at an angle of 35° at 25 m/s. What was the force of kick? Known: m = 0.0010 kg vi = 5 m/s θ = 35° vf = 25 m/s Homework Equations mvi = mvf F = ma The Attempt at a Solution Would this count as an...

So we had some questions in lab today that left me confused. Someone please tell me what I'm not understanding here? We start with a light mass moving at velocity v, having linear momentum p=mv and kinetic energy (mv^2)/2, and a heavy mass at rest, with linear momentum p=M(0)= 0 and kinetic...

Homework Statement A 1 Kg car moving at 2m/s collides elastically with a stationary car. The first car rebounds opposite to the original direction at 1m/s and the second car moves off in the original direction of the first car. A) What is the mass of the 2nd car B) What is the speed of...

Two objects of masses 2.0 kg and 6.0kg slide without friction down the sides of a hemispherical bowl. Both start with zero velocity at the lip, which is 12 cm above the bottom. The objects collide at the bottom of the bowl. Just before the collision, they are moving at right angles to each...

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...

1. A bumper car with mass m1 = 105 kg is moving to the right with a velocity of v1 = 4 m/s. A second bumper car with mass m2 = 98 kg is moving to the left with a velocity of v2 = -3.8 m/s. The two cars have an elastic collision. Assume the surface is frictionless. 2.Vcm= (m1v1+m2v2)/m1+m2 V1 in...

Homework Statement A particle of mass m approaches a stationary particle of mass 3m. They bounce off elastically. Assume 1D. Find the final velocities using the center of mass coordinate system. Homework Equations (All quantities with r or v are vectors r1 and r2 represent the...

Will some of the stars of the Milky Way crash into those of Andromeda if these galaxies merge? What are the odds? How large a share of the stars will this happen to? Thanks

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.

If car 1 has a a mass(m) and car 2 has a mass(2m), in a head on collision, with both cars traveling the same velocity, which car experiences a bigger acceleration ? my answer - car 1 If two identical cars with identical speeds and masses collide, the impulse received by each car is the...

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...

Homework Statement A 10.0g bullet is fired into a stationary block of wood (m=5.00 kg). The bullet imbeds into the block. The speed of the bullet-plus-wood combination immediately after the collision is 0.600 m/s. What was the original speed of the bullet? ball m=10.0g=0.01kg wood m=...

A stationary object with mass mb is struck head-on by an object with mass ma that is moving initially at speed v0. If the collision is elastic, what percentage of the original energy does each object have after the collision? I don't know how to find percentage.

Homework Statement An unstable nucleus of mass 1.70 10^-26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles. One particle, having a mass of m1 = 5.40 10^-27 kg moves in the positive y-direction with speed v1 = 7.20 106 m/s. Another particle...

valence Z=1, lattice param a = 4.05 conductivity = 1.76e7 . What's the avg time between collisions of a conduction electron in this metal (bcc structure).really have no idea lol

These may seem like silly questions, but seeing as I'm not a physics major (I teach myself about what interests me in any subject really), I could use some clarification on the issue. Does an anti-particle annihilate only when it meets its "regular matter" particle counterpart, or will the...

Homework Statement What fraction of the energy of a rapidly moving proton is not available for inelastic interactions in proton-proton collisions when the target proton is at rest in the laboratory and the energy of the accelerator is (a) 3 GeV (b) 7 GeV (c) 25 GeV (d) 200 GeV (e) 1000 GeV...

This is not dircectly a coursework question, rather I need someone to tell me what is correct and what is not correct in my assumption of Momentum and collisions, esp conservation of linear momentum. For some reason I stand to believe there are two diffirent equations for conservation of...

Homework Statement This is an experiment involving colliding 2 gliders on an airtrack. Initial and final speeds are both recorded. I need to plot a graph that proves the Conservation of Momentum holds true, but I can't seem to get the correct Y and X axis variables. Assuming both masses m1 and...

Hi everyone. I believe that I'm in the right place for this topic. If not, please excuse me for the misplacement :) I am a programmer, not a physicist, so please excuse my lack of knowledge. I currently need help with an energy conservation problem. I am currently working on this problem...

in a movie stunt, a 65 kg skier starts from a rest postion at the top of a hill 30 m 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 fiinal velocity of the skiers. ATTEMPT. i know i have to use...

In an elastic head-on collision, a 0.60 kg cart moving at 5.0 m/s (W) collides with a 0.80 kg cart moving at 2.0m/s (E). the collision is cushioned by a spring (k=1200 N/m) a find the velocity of each cart after the collision b find the maximum compression of the spring ATTEMPT...

Homework Statement if m1 and m2 (m1= m2, (vm1 = 4m/s)) collide at an angle λ (60°) we can fully predict oucome: angles (60° and 30°) and speeds (2 and 3.46) can we predict the outcome if we know that m1/m2 = 3/ 5 ?

First off, i'd like to note that this isn't homework, and I've seen other threads in here that deal with question/equation/problems, so I hope this isn't against the rules. I found this on a practice physics test online. I'm just using it for the benefit of my knowledge, nothing more. I can...

Homework Statement Question:A 2,800kg car is traveling at a velocity of 22m/s. The car hits the wall and comes to a complete stop. The collision took 0.3 seconds. a. What is the cars impulse? b. What force did the wall exert on the car? c. What force did the car exert on the wall? d...

Homework Statement A 0.045kg Steel marble collides obliquely with an identical stationary marble, and continues at 55 degrees to its original direction. The collision is perfectly elastic. What is the angle between the direction taken of the target (previously static) ball and the original...

Can anybody tell me if any research is currently being carried out,or planned,to investigate further high energy electron/electron collisions?If so what sort of information may such research reveal?The only thing I can think of is that any research may be able to test Coulombs law down to...

Alrighty, I'm working on a three dimensional physics simulator that does every operation in spherical coordinates and vectors, and I'm stuck on figuring out elastic collisions. are elastic collisions essentially trading momentum between the two colliding bodies? I'm assuming not, but i can't...

Hello all. I have what seems to be a fairly simple problem but I need a bit of help on the reasoning and what happens in a qualitative sense if some factors change. The problem is of e.g. a larger spherical type thing happily traveling along at a fixed velocity but with a smaller (e.g. 10x...

Hi everybody. That's my first (of many) post here! I'm a brazilian guy who is trying o solve de Wopho's Problems. And onde of then called my attention for the criativity using an (theoterically) easy concept of elastic collision. The problem is the second...

Homework Statement Two 2.1 kg balls are attached to the ends of a thin rod of negligible mass, 63 cm in length. The rod is free to rotate in a vertical plane about a horizontal axis through its center. With the rod initially horizontal as shown, a 50 gm wad of wet putty drops onto one of the...

How frequent are collisions in the ooort cloud? Are there any good reference in the literature about this topic?

Homework Statement I am trying to write (for my own interest) a program in C that solves a simple 1-dimensional physics problem. I want the program to determine the times (after t=0) of the first ten collisions for two elastic balls constrained between elastic walls at x=0 and x=a. The user...

I've recently been looking for information on how to describe elastic and inelastic collisions in a way that spans the full set of possibility of different levels of elasticity between objects. In both of my physics textbooks I was only able to find quantified information on the two extremes...

Hi, I am wondering if all the old collisions problems from beginning physics can still be applied and solved for using quantum mechanics. For example. In mechanics we used conservation of momentum and kinetic energy in elastic collisions to solve for out-going momentums of pool balls. Can...

Homework Statement here is a picture of the problems I am having trouble with: http://oi55.tinypic.com/2llca50.jpg or if that doesn't work: http://tinypic.com/view.php?pic=2llca50&s=7 Homework Equations for question 1: part 1: p1 + p2 = p`1 + p`2 and Distance=Time*Speed part 2: W(f)...

Homework Statement Q: Two air track gliders of masses 300g, and 200g move towards each other in opposite directions with speeds of 50cm/s and 100cm/s respectively. Take the direction of the more massive glider as positive. If the collision is elastic, find the velocity of each glider AFTER...

Homework Statement A sample of gas (H2) is kept within a container with a piston seal (of mass M) at the top. This piston can move freely. Let's say the pressure on the piston above it is one atmosphere. If we then put this container in a reservoir of ice then the volume of the gas will...

Hi guys, just wanted to clear a few things up for myself.. By rearranging the conservation of momentum and conservation of energy equations I think I've shown that a collision that involves the colliding objects moving off together after the collision (like a bullet getting stuck in a...

I am sure many of you are familiar with the Impulse-Momentum Theorem: \Deltap = F * \Deltat Is there any way to mathematically derive the time that the two objects would stick together during the collision without using the left side of the equation?

Homework Statement A proton with kinetic energy T1 = 10MeV scatters elastically from a stationary carbon - 12 nucleus. The scattered proton emerges at 30o to its initial direction. a) Draw a sketch to represent the b4 and after conditions for this collision in the lab reference frame...

What would happen if an electron were accelerated in an attempt to collide with an accelerated proton in a particle accelerator? What would happen in a collision between an electron and a neutron?

Homework Statement 1. A red car with a velocity of 20mph north collides with a blue car that is stopped at a stoplight. On which car is the force greater? 2. A red car with a velocity of 25mph north collides with a blue car with a velocity of 15 mph north. Which one feels a greater force...

A cart with mass 370 g moving on a frictionless linear air track at an initial speed of 1.7 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision, the first cart continues in its original direction at 0.42 m/s. (a) What is the mass of the...