Kinetic energy object vs opposing KE object?

AI Thread Summary
The discussion centers around a scenario involving a ball and a cart colliding, analyzing the kinetic energy (KE) and momentum of both objects. The ball, with a mass of 0.150 kg moving at 90 m/s, has a significant amount of kinetic energy compared to the 35 kg cart moving at 4.5 m/s. Participants debate whether the remaining kinetic energy after the collision can do work on the cart, with some arguing that energy itself does not do work; rather, it is the force exerted during the collision that changes momentum and kinetic energy. The conversation highlights the importance of understanding the conservation of momentum and the role of external forces in collision events. Ultimately, the consensus emphasizes that while kinetic energy can be transformed, the interaction forces during a collision are what facilitate work being done.
  • #51
normal_force said:
Okay, no, what I am saying is totally different.
Then please explain what you are saying in a way that others can apply it to various circumstances.
 
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  • #52
Well, the Kinetic energy exerts force, it does work...so, my idea is that...they do work...so, its force vs force...work vs work, I guess...
 
  • #53
normal_force said:
Well, the Kinetic energy exerts force, it does work...so, my idea is that...they do work...so, its force vs force...work vs work, I guess...
Doesn't help. To be usable, you have to be able to express that as a formula. You somehow used your concept to get an answer to your original ball and cart scenario. What actual process/formula did you apply to do that?
 
  • #54
Closed pending moderation.

Edit: this thread will remain closed, but I wanted to thank haruspex for your extraordinary patience.
 
Last edited:

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