Collisions Definition and 693 Threads

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...

Hey all-- I had a test yestrerday dealing with momentum, energy convservation, collision, etc, and there was one question that was marked incorrect, however I feel that I may have done it correctly. Please check over my work against my teacher's solution to see what you guys think... anyway...

I'm stuck, for the past 30 minutes. Anyone care to give a struggling student a hand? Any help would be appreciated due to that fact that I don't understand the material. I have notes, yet I have one of those teachers who talk, but don't teach. I don't know. Thanks to anyone who can help me out...

If you do some simple manipulations of the equations E=hf, E=1/2mv^2, P=mv, and p=h/<lambda>, one can derive that the momentum is h/<lambda> or that it is h/(2<lambda>). I know that photons do not always follow normal mechanics, but do they follow the usual rules for mechanics for collisions...

I just needed help on these problems because I got stuck on them. Anyone know how to start off these problems? An amoeba of mass 1.0 x 10^-12 kg propels itself through the water by blowing a jet of water through a tiny orifice. Suppose the amoeba ejects water with a speed of 1.0 x 10^-4 m/s...

If i have the equation m1v1 + m2v2 = m1v1' + m2v2' would i have to use any calulus to find either velocity of the second object? What is that the equation for? Is it inelastic collisions?

What is the equation for completely inelastic collisions?

I'm trying to do these problems by only reading about them in the book and, having not discussed them in class at all, I'm a little weary about some questions. So bear with me if some of the questions seem a little bit stupid .. I'm just starting out with this stuff. There are more questions...

1. An experiment is performd in a physics laboratory to find the mass of a stationary particle, B. A proton, A, of mass 1.7 x 10^-27 kg, traveling at 4.0 x 10^6 m/s, strike B and bounces straight back at a speed of 2.0 x 10^6 m/s. If B moves ahead at 1.0 x 10^6 m/s. calculate B's mass 2. Two...

In the rather basic physics class I'm in we just coverd conservation of momentum. We went over the application of this with elastic collisions. I understand that Total momentum before the collision = Total momentum afterwards. What I don't uderstand is how can you tell what the individual...