What is Inelastic: Definition and 494 Discussions

Say we have 2 particles moving in the same direction, which undergo an elastic collision. Take the rest mass of particle to be m_1, the rest mass of particle 2 to be m_2, with velocities u_1,u_2, with u_1>u_2. Assume they collidie inelastically to form a new particle m3 Are my conservation...

Can anyone help me with this? A steel wrecking ball of mass 200kg is fastned to a 10m long chain which is fixed at the far end to a crane. The ball is released when the chain is horizontal. At the bottom of the path the ball strikes a 1000kg car initally at rest on a frictionless surface. The...

Can anyone tell me what i am doing wrong for this problem? Two 75 kg hockey players skating at 5.75 m.s collide and stick together. If the angle btween their initial directions was 125 degrees, what is their velocity after the collision? I used the formula Vf = m1v1/(m1+m2) cos 125 for the x...

i need a help on this problem a 20g rifle bullet traveling 250m/s buries itself in a 3.8kg pendulum hanging on a 2.3m-long string. how far does th ependulum swing horizontally? Physics 3rd edition Douglas C. Giancoli

i need help for this problem if anyone could solve this, it's wonderful A 20g rifle bullet traveling 250m/s buries it self in a 3.8kg pendulum hanging on a 2.3m-long string. how far does the pendulum swing horizontally? Physics 3rd edition Douglas C. Giancoli

I have tried to do the last part of the attached problem about inelastic collisions between a water drop and vapour, where the mass and acceleration of the drop is changing with time. So, in order to find v and a wrt t I integrated the given equation. However, the result I obtained is...

a ball is dropped from rest at the top of a 6.10m-tall building, falls straight downward, collides inelastically with the ground, and bounces back. the ball loses 10.0% of its kinetic energy every time it collides with the ground. how many bounces can the ball make and still reach a window sill...

a block of mass m1 = 2kg slides along a frictionless table with a speed of 10m/s. Directly in front of it, and moving in the same direction is a block of mass m2 = 5kg moving at 3.0m/s. A massless spring with a spring constant of k = 1120N/m is attached to the near side of m2. When the blocks...

I've been working on this problem for a long time now, and my answer's off by about 0.1 m. I've looked at the problem several times, and I can't figure out why my answer's off. I would appreciate any help. Here's the problem, and my work. "A 0.2 kg frame, when suspended from a coil spring, is...

Impulse 1) A gold ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf club was in contact with the ball for 3.5 x 10^-3 s. Find (a) the impulse imparted to the golf ball and (b) The average force exerted on the ball by the golf club. Answer: (a) 2.0 kg(m/s) (b) 15.8 x 10^2...

In the kinetic theory, it is supposed that the molecules make elastic collisions with the walls of the container. Imagine that the collisions were inelastic. Describe and explain the consequence of this with regard to the temperature of the gas. So far, i have said that not all of the molecules...

Okay in an inelastic collision the formula the book taught me to use is this one: m1v1 + m2v2 = (m1 + m2)V' Now I've done every single problem in the book including the extra exercises, but of course when it comes to doing the homework they have to ask you questions which they haven't taught...

Question A rifle bullet with mass 8.00 g strikes and embeds itself in a block with mass 0.992 kg that rests on a frictionless, horizontal surface and is attached to a coil spring. The impact compresses the spring 15.0 cm. Calibration of the spring shows that a force of 0.750 N is required to...

Here's my problem: Car A (mass 970 kg) is stopped at a traffic light when it is rear-ended by car B (mass 1600 kg). Both cars then slide with locked wheels until the frictional force from the slick road (with a low mk of 0.23) stops them, at distances dA = 5.8 m and dB = 3.6 m. What are the...

Please help. Two particles move perpendicular to each other until they collide. View Figure Particle 1 has mass m and momentum of magnitude 2p, and particle 2 has mass 2m and momentum of magnitude p. Note: Magnitudes are not drawn to scale in any of the figures. a. Suppose that after the...

After a completely inelastic collision between two objects of equal mass, each having initial speed, v, the two move off with speed v/5.5. What was the angle between their initial directions? Well, inelastic collision so it looks like I'll be using the momentum equation in here. My professor...

Can anyone help me with theses problems? 1. A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. The figure shows the force during the collision. After the cart bounces, how far does...

Given: Two gliders on an air track collide. Glider A has a mass of 0.269 kg and is moving in the +x direction with a speed of 1.07 m/s. Glider B has a mass of 0.330 kg and is moving in the -x direction with a speed of 0.675 m/s. a) What is the velocity of A and B if the collision is...

This is probably easy for most people, but I can't quiet seem to understand it. Two automobiles have a perfectly inelastic collision. The automobiles, which are identical models except for the color and which contain only drivers of identical masses, meet at an intersection. Each was moving...

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...

Hi, I have the following question to solve, and whilst I've got ideas I have no idea if there right: Do we use F=ma ? Thanks Graham

A 16 g bullet strikes and becomes embedded in a 1.30 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.22, and the impact drives the block a distance of 8.5 m before it comes to rest, what was...

This problem's got me stumped. "After a completely inelastic collision between two objects of equal mass, each having initial speed v, the two move off together with speed v/3. What was the angle between their initial directions?" Any help would be appreciated!

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...

I forget how to solve one dimensional motion problems with friction, which is holding me up in this problem: a 5.00 g bullet is fired horizontally into a 1.2 kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between the block and surface is .2. The bullet...

Hi everyone. I need some help with the following question. In a traffic accident, a car of mass 2000kg traveling south collided in the middle of an intersection with a truck of mass 7000kg traveling west. The vehicles locked and skidded off the road long a line pointing southwest. A witness...

Hi everyone. I need some help with the following question. In a traffic accident, a car of mass 2000kg traveling south collided in the middle of an intersection with a truck of mass 7000kg traveling west. The vehicles locked and skidded off the road long a line pointing southwest. A witness...

I'm studying collisions in terms of basic mechanics (impulse, rebound, momentum, etc.) I'm curious about the structure of types of mass that have elasticity and others than have less. I'm interested in why the masses behave they way they do because of their structure. Would somewhere here...

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...

Problem: A thin rod of mass M and length L rests on a frictionless table and is struck at a point L/4 from its center of mass by a clay ball of mass m moving at a speed v (the velocity vector is perpendicular to the rod). The ball sticks to the rod. Determine the translational and rotational...

Yet another problem I'm breaking my head with: A thin rod of mass M and length L is suspended vertically from a frictionless pivot at its upper end. A mass m of putty traveling horizontally with a speed v strikes the rod at its center of mass and sticks there. How high does the bottom of the rod...

Why is KE not conserved in inelastic collisions?

The problem is: The red car rear ended the blue car(who was stopped at a stop sign, with handbrake partly on) the cars ended up seperately on the other side of the intersection. We are asked to explain what happened, was the driver of the red car speeding etc. I am unsure how to start this...

Two identical balls made of putty, each of mass 1.50 kg, are suspended from strings of length 28.0 cm so that they touch when in their equilibrium position. We pull one of the balls back until its string makes an angle theta = 73.0 degrees with the vertical and let it go. It collides totally...

Hi! How do i find change in kinetic energy? Here is the problem: The rubber ball is dropped 2m elastically off the floor, so its speed immediately after bouncing is the same as immediately b4. If the rubber ball has a mass of 0.015kg and its velocity is 6.26m/s, what is its change in...

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...

Hello, This concerns a collision between two spherical balls of equal mass and radius. The collision is two dimensional and not completely elastic. The secondary ball begins stationary. The primary ball travels along the horizontal axis with a given velocity. After the collision, the...

A car weighing 900 kg is waiting at a stop sign. A car weighing 1200 kg hits the oter car. The cars move .76 m after the collision. The coefficient of friction between the sliding tires and the pavement is .92. I need to find the speed of the car right before the collision. I don't know what...

A car weighing 900 kg is waiting at a stop sign. A car weighing 1200 kg hits the oter car. The cars move .76 m after the collision. The coefficient of friction between the sliding tires and the pavement is .92. I need to find the speed of the car right before the collision. I don't know what...

I already posted this in the General room, so sorry. It should have been in here in the first place. Here's a question for anyone out there who would really like to less-than-moderately challenge their physics skills: There is a 40 kilogram box hanging from the ceiling, at rest. A bullet with...

Here's a question for anyone out there who would really like to less than moderately challenge their physics skills: There is a 40 kilogram box hanging from the ceiling, at rest. A bullet with a mass of 0.01 kilogram hits it, forcing it to swing back on the ropes. As it swings back, it gets...

What is the equation for completely inelastic collisions?