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If something is accelerating in one direction in a closed system,is there anything that could cause it to stop?

is there anything that could cause it to decelerate? Hypothetical situation.

If it is accelerating outward from where it started, is there any possible internal force that could reverse the acceleration? It's a closed system, and no external forces are at work on it. Say two or a thousand particles are accelerating in opposite directions, so some gravity / whatever exists. In all the world of physics, is there anything that could reverse it, and if so, what and how does it function?

4 Answers

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  • 1 decade ago
    Favorite Answer

    Suppose the object has negative velocity and positive acceleration. The magnitude of the velocity will decrease to zero; so for an instant, it will be stopped; and velocity will become positive and grow.

  • Anonymous
    1 decade ago

    Brakes on car? Imagine a closed system with a car inside .....

    Reversing the thrust on a rocket? Imagine a similar situation as the car ...

    Etc.

    You do not understand what a closed system is, from the way you asked the question.

    Talk with your teacher.

  • 1 decade ago

    Hmmm, something must be causing the acceleration...

    I guess the apple will stop when it hits the Earth.

  • 1 decade ago

    No because there are no internal forces

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