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Discuss the motion of an object under fr...

Discuss the motion of an object under free fall and draw (a) acceleration-time , (b) velocity-time and (c ) position-time graph for this motion .

Text Solution

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The object falls with uniform acceleration equal to ‘g’
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Knowledge Check

  • The velocity -time graph for a body with non-uniform motion is a

    A
    straight line
    B
    straight line parallel to x-axis
    C
    straight line parallel to y-axis
    D
    curved line

  • The velocity time graph of the motion of a car is given here.

    A
    The distance travelled by the car in the first six seconds is 150 m.
    B
    The deceleration of the car during the last two seconds are `-15 m/s^(2)`.
    C
    The distance travelled by the car in the first six second is 220 m.
    D
    The deceleration of the car during the last two second is `-20 m/s^(2)`

  • If the motion of an object is represented by a straight line parallel to the time axis in a distance-time graph, then the object undergoes

    A
    an acceleration motion
    B
    a decelerated motion
    C
    a uniform non-zero velocity motion
    D
    a zero velocity motion

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    For an object under free fall, discuss the variation of acceleration with time, velocity with time and position of object with time. Also represent them graphically.

    Position-time graph for motion with zero acceleration is

    Draw position vs time graph of uniform velocity.

    Write some uses of velocity-time graph of an object in uniform motion.

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