Elastic collision Definition and 531 Threads

Homework Statement A rapidly moving body of mass m1 strikes a body of mass m2 at rest in a head-on elastic collision. How does m1 compare with m2 if the first body (m1) a. stops? b. comes back along its path at very nearly the same speed it had before the collision? c. continues along in...

Homework Statement A 20g ball is fired horizontally with initial speed vi toward a 100g ball that is hanging motionless from a 1.0m long string. The balls undergo a head-on, perfectly elastic collision after which the 100g ball swings out to a maximum angle of 50degrees. What was vi...

Homework Statement A handball of mass 668 grams is thrown straight against a wall with a speed of 13.36 m/s. It rebounds straight back out with the same speed. The average force exerted on the wall by the ball is 12 N. How long is the ball in contact with the wall? Homework Equations...

Homework Statement a proton with kinetic energy 10GeV collides with a proton at rest. 1 proton goes off with an angle of 45 degrees relative to the incoming proton. Find the velocity of both protons after the collison. This is an ellastic collision. E(initial) = 938 mev i honestly don't know...

Homework Statement A 0.24kg object traveling rightward at 3.5m/s collides head-on and elastically with a 0.40kg object traveling leftward at 2.1m/s. What are their velocities after the collision? If the objects are in contact for 0.010s during the collision, what is the magnitude of the...

Homework Statement Two asteroids of equal mass in the asteroid belt between Mars and Jupiter collide with a glancing blow. Asteroid A, which was initially traveling at 40.0 m/s with respect to an inertial frame in which asteroid B was at rest, is deflected 30.0 degrees from its original...

Okay, i have a problem here with 2 dimensional elastic collision between 2 balls with equal mass, they are both moving in different directions before collision what i know: vx and vy of both balls, the slope of their movement, which can be converted to an angle with tan-1 x the problem is all...

Homework Statement A block of mass m1 = 5.00 kg is released from A. It makes a head on elastic collision at B with a block of mass m2=10.0kg that is initially at rest. Calculate the maximum height to which m1 rises after the collision Homework Equations Pi = Pf Ef= Ei + other work...

Homework Statement Cart1, with mass m, is initially at rest and is struck by cart2, which has a mass of 337 kg and initial speed of 2.07 m/s. The collision is elastic and after the collision cart2 continues to move in its original direction at 0.900 m/s. Find m, the mass of cart1...

Homework Statement Block 1 of mass m1 slides along an x-axis on a frictionless floor with a speed of 2.40 m/s. Then it undergoes a one-dimensional elastic collision with stationary block 2 of mass m2 = 2.00m1. Next, block 2 undergoes a one-dimensional elastic collision with stationary block...

hello there. this is as much a comp sci question as a physics question, however the comp sci board looked more like a 'computer technology' board, and didn't have much stuff relevant to physics. even though I'm trying to optimize an algorithm for a very specific need, it requires knowledge of...

Homework Statement A steel ball of mass .500 kg is fastened to a cord that is .70 m long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of the path, the ball strikes a 2.50 kg steel block initially at rest on a frictionless surface. The...

Elastic collision please help! Homework Statement Please help me... A 200 g block is released from rest at a height of 25 cm on a frictionless 30 degree incline. it slides down the incline and then along a frictionless surface until it collides elastically wt an 800 g block at rest...

Homework Statement The figure shows a 2kg block moving at a speed of 0.5ms-1 on a smooth horizontal surface. It collides head-on elastically with an initially stationary block of mass 3kg which is fitted with a light spring. What is the maximum elastic potential energy stored in the spring...

Homework Statement Two pool balls hit head on. V(1) = 2.0 m/s west, V(2) = 5 m/s east. Mass is the same for each ball. Homework Equations The Attempt at a Solution m(1)*(-2m/s)^2 + m(2)*(5m/s)^2 =? no idea...I just know that each ball should be going the same speed and direction as the...

Homework Statement Two particles of masses m and 8m move toward each other along the x-axis with the same initial speeds of 9.69 m/s. Mass m is traveling to the left and mass 8m to the right. They undergo a head-on elastic collision, and each rebounds along the same line as it approached...

I tried to use Lagrangian and Hamiltonian to solve 1-D elastic collision, but I got nothing but constant velocity motion. Is it because I miss some constraint? Such as the motion is colinear or something?But how to write a constraint like colinear? Or it's not actually solvable with Hamiltonian...

Homework Statement A neutron has an elastic collision with a stationary deuteron. Mass of neutron is 1 amu, mass of deuteron is 2 amu. the neutron is deflected through 90 degree angle. Prove that the neutron loses 2/3 of it's initial kinetic energy to the deuteron. Homework Equations...

Homework Statement When two balls are dropped like shown in situation 1 in the figure, the top ball shoots up after the impact, while the bottom ball loses some of its mechanical energy, as seen in situation 3. By simplifying the situation, we can assume that the bottom ball stops and...

Homework Statement Ok so I have two objects of different masses {m}_{{1}} for the projectile and {m}_{{2}} for the spinning top. The projectile has only translational kinetic energy in the direction of the arrow (see attached image), with {v}_{{1}} and {v}_{{2}} as initial and final linear...

Came across this one in my freshman physics book: A particle of mass 1m is traveling along the x-axis at velocity V1. It collides elastically with a second particle of mass 3m traveling at velocity V2. The first particle (1m) moves off at 0.92m/s at 48º to the x-axic. The second particle (3m)...

Homework Statement A Pendulum weighs .5kg and has a string length of 70cm swings from a horizontal position downwards to hit a block that weighs 2.5 kg and is on a frictionless plain. Calculate the speed of both the ball and the block after the elastic collision. Homework Equations...

Homework Statement A 2.00 kg block is at rest at the top of a frictionless inclined plane. The block is...

what formula/s should i use in this problem: 2 identical bodies move forward each other. One has a velocity of 4 m/s and the other has a velocity of 6 m/s assuming a perfeclty elastic collision. Find their velocities after collision pls help me p. elastic col is not included in...

I don't usually ask questions here, but I've been stuck for a v-e-r-y long time on this problem. It goes like this: A ball is dropped 1 meter above a tray connected to a spring. This is what it looks like: O |____| >< <> >< <>Mass of ball - 1kg Mass of tray - 5kg Spring - K = 100...

When two equal masses collide without having any rotational velocity before the collision, and they do attain some rotational velocity after the collision, then do we subtract the rotational momentum from the linear momentum which is given by the known equations, or is the rotational momentum...

Homework Statement An elastic object (F = k e) is thrown horizontally at a wall, so it is traveling at constant velocity, which then rebounds elastically (energy conserved). I'm only interested in when the object first makes contact and decelerates to 0ms-1 which will be when the object is...

Elastic collision. I cannot find the after collision velocities (quantity and direction), when 2 spheres strike an immobile sphere. All three of them have the same shape and volume, and the same mass (say e.g. 1 kg each). The two moving ones move parallel to each other with the same velocity u...

Homework Statement 10. A red convertible of momentum mv traveling north on the Murdoch Drive collides, at the intersection of Murdoch Dr and South St, with a green sedan having the same magnitude of momentum, but traveling west on South St. a. What is the magnitude and direction of the...

1. Homework Statement The problem is in the picture(attached) 2. Homework Equations I know we have to use m1v1 + m2v2 = m1v1' + m2v2' (1/2)m1v1^2 + (1/2)m2v2^2 = (1/2)m1v1'^2 + (1/2)m2v2'^2 3. The Attempt at a Solution All I know is that it needs to be split up into components...

Homework Statement The problem states: A 0.140 kg block on a frictionless table is firmly attached to one end of a spring with k = 25 N/m. The other end of the spring is anchored to the wall. A 0.023 kg ball is thrown horizontally toward the block with a speed of 5.2 m/s. What is the ball's...

Homework Statement A 1 Kilogram object with speed of 2.0 m/s in the positive x direction has a head -on elastic collision with a stationary 0.70Kg object located at x=0. What acceleration does the stationary object experiences during the collision if the collision occurs over 0.2 seconds...

Homework Statement A block of mass m1= 5kg is released from point 1 which is 5 meters above the horizontal frictionless surface and slides down a frictionless track. It makes a head-on collision at point 2 with a block of mass m2= 10kg that is initially at rest. Calculate the maximum...

Homework Statement A 70.0 kg person steps through the window of a burning building and drops to a rescue net held 8.00 m below. If the surface of the net is 1.40 m above the ground, what must be the value of the spring constant for the net so that the person just touches the ground when the...

elastic collision help! Homework Statement A spherical satellite of radius 4.7 m and mass M = 195 kg is originally moving with velocity v1i = < 2800, 0, 0 > m/s, and is originally rotating with an angular speed w = 2 radians/second, in the direction shown in the diagram. A small piece of...

Homework Statement A 1.2kg mass moving 2.4m/s [East] has an elastic collision with a 2.4kg mass moving 1.8m/s [North]. What are the final velocities? ------------------------------------- I know that I need Ek before and after the collision, but I'm not sure how to calculate it for this...

If two cars are going towards each other, collide, and then are separated (have separate masses and separate velocities)... that is an elastic collision, correct?

Homework Statement A particle of mass M1 collides elastically with a particle of mass M2 at rest. Show that if M1>M2 then the angle of M1 after the collision cannot exceed the value arcsin(M2/M1). Homework Equations conservation of momentum: M1v1=M1v1`+M2v2` conservation of kinetic...

An object with mass 3.6 kg is moving in the positive x direction when it strikea second object head-on. THe collision is elastic and afterwards both objects are moving in the positive x direction. If the final speed of the second object is equal to 8 times the final speed of the first object...

Homework Statement a) State the law of conservation of linear momentum. b) A proton of mass 1.6*10-27kg traveling with a velocity of 3*107ms-1 collides with a nucleus of an oxygen atom of mass 2.56*10-26kg (which may be assumed to be at rest initially) and rebounds in a direction at 90 degrees...

In this problem we will examine the collision between a baseball (the cowhide) and a bat (the ash). We assume a one-dimensional problem. That is, the bat hits the ball squarely, so that the ball reverses its direction after the collision. We also assume that the ball hits the bat at the center...

Homework Statement A hockey puck B rests on a smooth surface of ice and is struck by a second puck A , which was originally traveling at 40.0 m/s and which is deflected 30.0 degrees from its original direction. Puck B acquires a velocity at a 45.0 degree angle to the original direction of A...

Homework Statement Homework Equations MaVa+MbVb=MaV'a+MbV'b PE=mgh KE=.5mv^2 mgh=.5mv^2=KE of small ball just before collision The Attempt at a Solution I first determined the starting height of the pendulum using the pythagorean theorem through sin15=y/.95 y=.2459 m...

1. An 8 g rubber bullet was fired into a 2.5 kg pendulum bob, initially at rest, and becomes embedded in it. The pendulum rises a vertical distance of 6.0 cm.Calculate the initial speed and how much kinetic energy is lost in this collision? 2. An 8 g rubber bullet was fired into a 2.5 kg...

Homework Statement A 6 gram ball moving north at a rate of 3 m/s collides head on with an identical ball moving south at 2.0 m/s. The collision is elastic and the first ball moves south at 1 m/s. What is the velocity of the second ball? Homework Equations Law of conservation of...

Homework Statement a moving train collides with a train that is not moving, and the trains use their springy bumpers to bounce off of each other without damage. Assume diff masses for train A and B. Identify your isolated system, solve for the final velocity of EACH train in terms of INITIAL...

[solved] finding final velocity in a perfectly elastic collision ~~~Two marbles with equal masses collide. Marble A has an initial velocity of 1.69 m/s while marble B is initially at rest. If marble A comes to rest as a result of the initial collision, what is the final velocity of marble B...

Homework Statement In an elastic collision between an alpha particle and an unknown nucleus at rest, the alpha particle was deflected through a right angle and lost 40 percent of its energy . Identify the mysterious nucleus. Homework Equations...

Homework Statement 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 5.40 m/s. After the collision, the orange disk moves along a...

Homework Statement A neutron in a nuclear reactor makes an elastic head-on collision with the nucleus of a carbon atom initially at rest. (a) What fraction of the neutron's kinetic energy is transferred to the carbon nucleus? (The mass of the carbon nucleus is about 12 times the mass of...