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The direction in which an obect moves is...

The direction in which an obect moves is given by thedirection of velocity of the object and bot by the direction of acceleration. Explain this staement with suitable exmple.

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When an object is thrown up, the direction of motion of the object and hence, its velocity are along vertical in upward direction. As the object moves up, it is always attracted by eaarth in downward direction, i.e. the acceleration is in vetical downward direction. Hence, the direction of motion to the object is that of velocity and not that of acceleration.
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Knowledge Check

  • When a projectile is at the highest point of its trajectory, the directions of its velocity and acceleration are

    A
    Parallel to each other
    B
    anti-parallel to each other
    C
    inclined to each other at an angle of 45 degree
    D
    perpendicular to each other

  • Assertion : Acceleration of a moving particle can change its direction without any change in direction of velocity. Reason : If the direction of change in velocity vector changes, the direction of acceleration vector also changes.

    A
    If the both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
    B
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
    C
    If Assertion is true, but the Reason is false.
    D
    If Assertion is false but the Reason is true.

  • At the top of the trajectory of a projectile, the directions of its velocity and acceleration are

    A
    Perpendicular to each other
    B
    Parallel to each other
    C
    Inclined to each other at an angle of `45^(@)`
    D
    Antiparallel to each other

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    Can the direction of the velocity of a body change when its acceleration is constant?

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    Give an example of a case in which an object's velocity is zero but its acceleration is not. Can an object's velocity ever be in a direction other than the direction of its acceleration? Explain.

    Statement I Acceleration of a moving particle can be changed without changing direction of velocity. Statement n If the direction of velocity changes, so the direction of acceleration also changes.

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