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Can the direction of velocity of an obje...

Can the direction of velocity of an object change, when acceleration is constant ?

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Yes, for an object thrown vertically upwards, the direction of velocity changesduring its rise and fall. But acceleration act always downwards and remains constant.
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Knowledge Check

  • When an object undergoes acceleration:

    A
    its velocity increases
    B
    its speed increases
    C
    its motion is uniform
    D
    a force always acts on it

  • Displacement (y) of a body is represented by y = pt + qt^(2) - rt^(3) where p,q and r are constants of motion. The velocity of the body when its acceleration is 0 :

    A
    `p + (q^(2))/(2r)`
    B
    `p + (q^(2))/(r)`
    C
    `p + (q^(2))/(4r)`
    D
    `p + (q^(2))/(3r)`

  • Displacement (y) of a body is represented by y = pi + qt^(2) - rt^(3) where p,q and r are constants of motion. The velocity of the body when its acceleration is given by :

    A
    `p + (q^(2))/(2r)`
    B
    `p + (q^(2))/(r)`
    C
    `p + (q^(2))/(4r)`
    D
    `p + (q^(2))/(3r)`

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