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In ............(rotatory/translatory) mo...

In ............(rotatory/translatory) motion, an object is permanently displaced from its original position

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Knowledge Check

  • A position-time graph for linear motion of an object in one dimension shows the object's displacement d from some origin at any given time t. If the graph is linear, its slope m is given by m= "rise"/"run"="charge in d"/"charge in t"=(d_1-d_2)/(t_1-t_2)=barv , where barv is the average velocity of the object . (t_1,d_1) and (t_2,d_2) are any two points on the line. The graph above is a position time graph for a person who takes a walk from her house . Which of the following scenarios is consistent with the graph ?

    A
    After 20 minutes the displacement of the person from her house is approximately 230 + 230 +410 + 900 =1770 m
    B
    The woman reverses direction every 5 minutes during her walk
    C
    After the first 5 minutes of her walk , the woman stops for 5 minutes . She then resumes walking.
    D
    The woman stops walking briefly at t=5, t=10 and t=15 minutes .

  • The velocity-time graph of a linear motion is shown below . The displacement from the origin after 8 seconds is

    A
    18 m
    B
    6 m
    C
    8 m
    D
    16 m

  • A person moves 30 m north. Then 30 m east, then 30sqrt(2) m south-west. His displacement from the original position is

    A
    zero
    B
    28 m towards south
    C
    10 m towards west
    D
    15 m towards east

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