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The position of a particle of mass 10kg moving along x- axis varies with time as `x=2+t^(2)`(x is in meter and t is in second).Then work done by net force from t=0 to till body attains velocity of 10m/s is ?

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Knowledge Check

  • The position (x) of a particle of mass 1 kg moving along X-axis at time t is given by (x=1/2 t^(2)) metre. Find the work done by force acting on it in time interval from t=0 to t=3 s .

    A
    4.2 J
    B
    5.4 J
    C
    4.6 J
    D
    4.5 J

  • The position x of a particle moving along x - axis at time (t) is given by the equation t=sqrtx+2 , where x is in metres and t in seconds. Find the work done by the force in first four seconds

    A
    Zero
    B
    2 J
    C
    4 J
    D
    8 J

  • The velocity v of a body moving along a straight line varies with time t as v=2t^(2)e^(-t) , where v is in m/s and t is in second. The acceleration of body is zero at t =

    A
    0
    B
    2 s
    C
    3
    D
    Both (1) & (2)

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