What is Inelastic: Definition and 494 Discussions

Homework Statement A bullet of mass 10 g strikes a ballistic pendulum of mass 2.0 kg. The center of mass of the pendulum rises a vertical distance of 12 cm. Assuming that the bullet remains embedded in the pendulum, calculate the bullet's initial speed. Homework Equations p = mv, pi = pf...

Homework Statement Raindrops of mass 0.99 mg fall vertically at a constant speed of 9.0 m/s, striking a horizontal skylight at the rate of 1000 drops/s and draining off. The window size is 17.0 cm x 25.0 cm. Assume the collisions of the drops with the window are completely inelastic...

with this technique that has been used to detect quarks, are the results reproducable every time? or are there different results which indicate the hadron has quarks that move inside? with rutherfords scattering, generally every 8000 alpha particles deflect in random directions. these results...

Homework Statement Block A (2.1kg) is moving at 7.8 m/s to the right and collides head on with block B (3.4kg), which is moving at 4.2 m/s to the left. a) What is the velocity (magnitude and direction) of the blocks after the collision, if the two blocks stick together? b) What is the...

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...

I think of all of the energy losses associated with macroscopic collisions and wonder how significant this effect is in the subatomic realm of inelastic particle collisions. For example, consider the inelastic pion photoproduction reaction: \gamma + p \rightarrow p + \pi^{0}. Obviously, there...

Homework Statement In an American football game, a 90.0-kg fullback running east with a speed of 5.00 m/s is tackled by a 95.0-kg opponent running north with a speed of 3.00 m/s. (a) Explain why the successful tackle constitutes a perfectly inelastic collision. (b) Calculate the velocity of...

Ball 1, with a mass of 100 g and traveling at 10 m/s, collides head-on with Ball 2, which has a mass of 300 g and is initially at rest. What are the final velocities of each ball if the collision is perfectly inelastic? We're suppose to be talking about Energy, but I figured I could use...

Homework Statement A compact car and a large truck collide head on and stick together (perfectly inelastic collison). Which vehicle experiences the larger momentum change? Which vehicle experiences the larger acceleration during the collision? Explain your answers. Homework...

Homework Statement Two wooden blocks of mass 8 kg and 4 kg respectively approach each other from opposite directions on a smooth level surface at a relative speed of 16 m s^1 . After a head-on collision they separate at a relative speed of 6 m s^1 . The initial velocity of the 8 kg block...

Homework Statement Car 1 (1500kg) is heading north 80km/h, Car 2 (3500kg) is heading east 50km/h. They collide inelastically. a.) Speed and direction of the wreck (car 1 + car 2)? b.) The kinetic energy lost? HERE I HAVE A PROBLEM: c.) What is the kinetic energy of the two-particle...

Homework Statement a 20 kg wood ball hangs from a 2.0 m long wire. the maximum tension the wire can withstand without breaking is 400 n. a 1.0 kg projectile traveling horizontally hit and embeds itself in a the wood ball. what is the largest speed this projectile can have without causing the...

An object of mass m (O1) moving with speed v collides head-on with a target object of mass 2m (O2) initially at rest. If the collision is perfectly inelastic, what fraction of O1's initial kinetic energy is lost? 1/2(m1)v^2initial=1/2(m1+m2)v^2final m1v1=(m+2m)v2 v2=1/3(v1)...

Homework Statement Two bodies A and B collide in a totally inelastic collision. Using the relevant equations and given that the mass of body A is 1200kg and the collision lasts for 0.2s, determine the average force vectors acting on each body during the collision. Homework Equations...

Homework Statement A .2kg mass traveling on a frictionless horizontal surface at a speed of 3 m/s. It hits a 1.3 kg mass at rest that is connected to a massless spring with a a spring constant of 100 Newtons per meter. The other end of the spring is fixed. Calculate the linear momentum and...

Homework Statement A cart of mass 1.2 kg that is moving to the right qt 3m/s collides on a block of wood of mass 0.8 kg that is lying at rest on top of a frictionless table. if the collision is inelastic, find the velocity of the composite body. Homework Equations The Attempt at a...

Homework Statement A cart of mass 1.2 kg that is moving to the right qt 3m/s collides on a block of wood of mass 0.8 kg that is lying at rest on top of a frictionless table. if the collision is inelastic, find the velocity of the composite body. Homework Equations The Attempt at a...

Hi, this is my first post, I've had a look at some examples to try and use them to help with my answer, but I've had no luck so far. I've just started doing physics and not spent much time on this board, so if my formatting/layout anything is a bit dodgy, then please tell me. I Would really...

Homework Statement A 1200 kg car moving at 88 km/h collides with a 7600 kg truck moving in the same direction at 65 km/h. The two stick together, continuing in their original direction at 68 km/h. Determine the kinetic energy of the center of mass of the (car + truck) system. Determine the...

Homework Statement A 2kg object moving 5m/s in the positive x direction has a one dimensional elastic collision with a 4kg object moving at 1m/s in the same direction. What is the resulting change in kinetic energy of the 4 kg object? Homework Equations K=1/2 m*v^2 m1v1+m2v2=(m1+m2)V...

http://img74.imageshack.us/img74/7216/physec7.png m1v1+m2v2 = (m1+m2)v IMPACT: Total Energy = 1/2mv^2 POINT P: 1/2mv^2+mgh = Total Energy at Impact

Homework Statement In the question that we were given it states that the resulting collision is a completely inelastic collision. Then it asks us to solve for the momentum and kinetic energy. For the momentum part I have already solved it and have values for final and initial velocities...

Homework Statement particle 1 with mass 6.7 kg going 7.3 m/s collides inelastically with a particle of mass 4 kg at rest. find the final velocity of particle one after the collision. Homework Equations Ki = Kf but, mechanical energy is not conserved in an inelastic collision. pi = pf...

Inelastic collision: Momentum conserved, KE not-- How? This is a question about the text of Hailiday/Resnick/Walker 8th ed. p217 - 219. It's not a homework problem, but just about understanding the text, so I hope I am posting to the correct location, if not, please advise. In the text they...

1) A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision? Relevant equations: m1v1 - m2v2 = (m1+ m2) vfinal My attempt: This is an inelastic collision because the...

Homework Statement A bigger, moving, vI]i[/I], collides with a smalled train that is not moving. Assume that after the collision the trains stick together. Assume the trains have different masses (mbig and msmall). Write doen the momentum conservation equation for the scenario. Solve for the...

Hi everyone! I've been on the question for a while and I'm not quite sure where I'm going wrong. If someone could help me out, I'd really appreciate it! Problem Two ice-fishermen are driving trucks across a frozen and frictionless lake. Truck 1 (m1 = 1190kg) is traveling with a speed of...

An electron with a kinetic energy of 4.9eV collides inelastically with a stationary mercury atom. Why can you assume almost 100% of the electron's energy can go into raising the mercury atom to its first excited state? I know that with an inelastic collision both energy and momentum are...

Homework Statement One way to measure the muzzle velocity of a bullet is to fire it horizontally inot a massive block of wood hanging from a string an d measure the height to which the wood (containing the bullet) rises. in one experiment the bullet had a mass of .05kg, and the wood has a...

A block of mass m1 = 1.8 kg slides along a frictionless table with a speed of 10 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 4.4 kg moving at 2.8 m/s. A massless spring with spring constant k = 1160 N/m is attached to the near side of m2, as shown in...

Homework Statement A 2000kg car moving east at 10 m/s collides with a 3000kg car moving north. They stick together and move as a unit after the collision, at an angle of 40 degrees north of east and at a speed of 5.22 m/s. Find the speed of the 3000kg car [B]before[B] the collision...

Homework Statement A 0.291 kg rubber ball is dropped from a height of 3.72 m, and it rebounds to a height of 2.88 m. Assume there is no air friction. a) Find the magnitude of the impulse exerted by the ground on the ball. Homework Equations Vf^2=V0^2+2as MV=P DeltaP=I The...

Homework Statement A 18.00 Kg lead sphere is hanging from a hook by a thin wire 3.80 m long, and is free to swing in a complete circle. Suddenly it is struck horizontally by a 4.50kg steel dart that embeds itself in the lead sphere. a)What must be the minimum initial speed of the dart so...

Homework Statement A bullet is fired vertically into a 1.20 kg block of wood at rest directly above it. If the bullet has a mass of 24.0g and a speed of 540 m/s , how high will the block rise after the bullet becomes embedded in it? Homework Equations 1/2mv^2+mgh=1/2mvf^2+mgh mv=mvf...

two cars, each of mass 1000 kg, are moving at the same speed, 20 m/s, when they collide and stick together. in what direction and at what speed does the wreckage move is one car was driving north and one south? i can't seem to figure this one out

Homework Statement A 2.0 kg object is moving at 5.0 m/s NORTHWEST. It strikes a 6.0 kg object that is moving SOUTHWEST at 2.0 m/s. The objects have a completely inelastic collision. The velocity of the 6.0 kg object post collision is: Homework Equations m1v1+m2v1 = m1v2+m2v2...

Homework Statement Two rolling gold balls of the same mass collide. The velocity of one ball is initially 2.70 m/s [E]. After the collision, the velocities of the balls are 2.49 m/s [62.8 degrees N of W] and 2.37 m/s [69.2 degrees S of E]. What are the magnitude and direction of the unknown...

Collisions and Determining the Original Speed Homework Statement Two spacecraft s from different nations have linked in space and are coasting with their engines off, heading directly toward Mars. The spacecraft s are thrust apart by the use of large springs. Spacecraft 1, of mass 1.9 x...

Homework Statement It's the bottom of the ninth inning at a baseball game. Score is tied with a runner on 2nd when the batter gets a hit. The 85 kg runner rounds 3rd and is heading home with a speed of 8.0 m/s. Just before he reaches home plate he crashes into the catcher and the two players...

Hey guys, I've been having a nasty problem in the construction of my physics engine, and it goes as follows. When I have the mass and initial velocity of two objects (and Ill assume its a head on collision to simplify matters), how would you calculate the final velocity of both objects, when...

A 920-kg sports car collides into a rear end of a 2300 kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid foward 2.8 m before stopping. The police officer, knowing that the coefficient of kinetic friction between tires and road is .80 , calculates the...

Homework Statement A 5.00 g bullet moving with an initial speed of 410 m/s is fired into and passes through a 1.00 kg block. The block, initially at rest on a frictionless, horizontal surface, is connected to a spring of force constant 965 N/m. 1. If the block moves 5.20 cm...

Can Someone look over this and tell me if the work is correct. Homework Statement An object comes in with known velocity (v) and known mass (m) moving directly along the x-axis. It strikes another object of the same mass (m) which is stationary. Find the change in energy of the incoming...

[SOLVED] MCAT Passage: Inelastic Collision Homework Statement A car (1000 kg) and a truck (2000kg) start from rest on a long, straight track. At time t=0, the truck is at position x=0 and the car is at position x=100m. Both vehicles then accelerate toward each other and collide. Both the...

[SOLVED] Inelastic collision on a frictional surface

Is there a proof showing how perfectly inelastic collisions result in the maximum kinetic energy loss? Thanks.

Homework Statement Hi, I would just like to know if I'm on the right track with this one. I have two identical particles with a radius R and mass M. One is at rest and the other moves directly down with a velocity v0. The second particle hits the first particle slightly offset, so that the...

[SOLVED] Conservation of linear momentum and inelastic collision Homework Statement I have a homogeneous beam of length L and mass M, attached with a frictionless hinge at one of the endpoints O. The beam is affected by gravity, g, in the negative y-direction. Initially the beam hangs...

[SOLVED] Elastic and Inelastic A 100 g block on a frictionless table is firmly attached to one end of a spring with k = 29 N/m. The other end of the spring is anchored to the wall. A 25 g ball is thrown horizontally toward the block with a speed of 5.9 m/s. Q1: If the collision is perfectly...

This is the way I understand inelastic collisions. Please correct me if I'm wrong on this. In an inelastic collision, kinetic energy is converted into internal energy and is lost (often in the form of heat). So, one cannot say that energy is conserved. Momentum, however, is conserved in this...