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State Newton's second law....

State Newton's second law.

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The force acting on a body is directly proportional to the rate of change of linear momentum of the body and the change in momentum takes place in the direction of the force.
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Knowledge Check

  • Assertion : A rocket moves forward by pushing the surrounding air backwards . Reason : It derives the necessary thrust to move forward , according to Newton's second law .

    A
    Both assertion and reason are true and reason is correct explanation of assertion
    B
    Both assertion and reason are true but reason is not the correct explanation of assertion
    C
    Assertion is true but reason is false
    D
    Assertion is false , but the reason is true .

  • Newton's second law gives

    A
    `vecF prop (d vecP)/(dt)`
    B
    `vecF = (dvecP)/(dt)`
    C
    `vecF = m vec a `
    D
    all the above

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