Class 11th Physics

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My question is that, I read about Instantaneous Speed

"Instantaneous speed of an object at an instant of time (t) is defined as the 'limit of the average speed as the time interval delta(t) at the given instant of time becomes infinitesimally small.'"

What does this paragraph mean? Please explain me in simple language and briefly? And if possible with an example.

Thank You

  • Class 11th Physics -

    It means instantaneous speed is the speed at that instant, not measured over a long time, but rather at that instant.

  • Class 11th Physics -

    can anyone explain me what is conservation of momentum

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