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mark2142

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https://www.physicsforums.com/threa...y-in-inelastic-collisions.311037/post-2182192

If I understand correctly mathematically the momentum of the system remains unchanged but individual momentums decreases always. In an inelastic collision the momentum always decreases and so is the KE. KE is due to momentum of the body. Whenever this happens the lost energy goes into heat or thermal energy of the body.

When a force is applied internally the momentum changes and then so is KE. This lost KE goes to heat.

So is momentum driving the body forward or KE?

If I understand correctly mathematically the momentum of the system remains unchanged but individual momentums decreases always. In an inelastic collision the momentum always decreases and so is the KE. KE is due to momentum of the body. Whenever this happens the lost energy goes into heat or thermal energy of the body.

When a force is applied internally the momentum changes and then so is KE. This lost KE goes to heat.

So is momentum driving the body forward or KE?

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