69k views

Why is momentum conserved in an inelastic collision and kinetic energy is not conserved? [duplicate]

We know that in an inelastic collision that total momentum of the system before collision equals the total momentum after collision. But total kinetic energy before collision is not equal to total ...
2k views

Why is there no relation between kinetic energy and momentum in collision of two bodies? [duplicate]

The statement that baffles me: During most of the collisions, part of the kinetic energy evolve as heat, nevertheless momentum is still conserved. Ok, the statement may be true. But what confuses ...
759 views

Why does inelastic collision obey the conservation of momentum? [duplicate]

Generally, when an inelastic collision occurs, the nonrelativistic energy of two observable objects is not conserved because some energy has been transformed into other forms such as heat and sound. I ...
4k views

Loss of kinetic energy in inelastic collision [duplicate]

I know that momentum and energy are always conserved in collisions, but if we have a perfectly inelastic collision in which an object sticks to another object $m_1 v_1 + m_2 v_2 = (m_1+m_2)v_{12}$, ...
826 views

In Inelastic collision, momentum is conserved while Kinetic Energy is not, Why? [duplicate]

First of all, I tell you that I know there is same question available which is already answered, but no answer cleared my doubt, that's why I am asking the question in more detail. Let there be a ...
563 views

How is it possible that momentum is conserved but kinetic energy is changed? [duplicate]

A simple maybe 8th or 7th grader question, but I can't really get over it. Elastic collision: momentum is conseved and so is the kinetic energy whereas in an inelastic collision, momentum is conserved ...
264 views

Why doesn't the momentum of the system change after an inelastic collision? [duplicate]

What I know: Wen an inelastic collision takes place the momentum of the two objects before the collision: m1 * v1 + m2 * v2 is equal to the momentum of the objects after the collision: (m1 + m2) * u ...
82 views

Are both kinetic energy and momentum conserved when 2 objects undergo a collision? [duplicate]

for example when two objects undergo a collision and no external force is acting on them. Will both kinetic energy and momentum be conserved or just momentum?
46 views

Why should energy change with mass? [duplicate]

At void, an object with velocity v, mass m collides with an object with the same mass m at rest. Let's assume that they were connected to each other(the instant after the collision). then it would be ...
44 views

How is linear momentum conserved after collision while part of linear kinetic energy contributes to angular kinetic energy [duplicate]

Referring to the famous example of a horizontally moving sticky ball that collides (and sticks) at the tip of a vertically floating rod, then the combination moves along the ball's incident course ...
32k views