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Can the direction of velcity of a body c...

Can the direction of velcity of a body change, when accleration is constant?

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Yes, when the body moves vertically upwards, after reaching the highest point, the body starts falling down, i.e. the direction of velocity is reversed, wheras the acceleration is constat.
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Knowledge Check

  • The direction of light can be changed by____

    A
    a plane mirror
    B
    a piece of paper
    C
    a stone
    D
    All of the above

  • 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.

    A
    Statement I is true, Statement II Is true, Statement II Is the correct explanation for Statement I.
    B
    Statement I Is true, Statement II is true, Statement II Is not the correct explanation for Statement I.
    C
    Statement I Is true, Statement II Is false.
    D
    Statement I Is false, Statement II Is true.

  • Assertion: IF a body moving in a circular path has constant speed, then there is nor foce acting on it. Reason: The direction of the velocity vector of a body moving in a circular path is changing

    A
    Assertion is true, Reason is true, Reason is a correct explanation for Assertion
    B
    Assertion is true, Reason is true, Reason is not a correct explanation for Assertion
    C
    Assertion is true, Reason is false
    D
    Assertion is false, but Reason is true
    • PRADEEP-KINEMATICS-2 Very short
    1. Can the direction of velcity of a body change, when accleration is con...

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    2. Lift travels in straight line at a constant speed of 3 cc 10^(8) m//s....

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    3. A ball is thrown vertically upward. At the highest point of its pathe,...

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    4. Unit of time occurs twice in unit of acceleration. Why ?

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    5. Is the acceleration of a car greater when when the accelerator is push...

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    6. Which of the two , velcity and acceleration, gives the direction of mo...

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    7. Two balls of different masses (one lightre an other heavier) are throw...

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    8. A stone is thrown vertically upwards from the velcity and accleration ...

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    9. Is it possible to have a constantrate of change of velcity when velcit...

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    10. Is it possible that the brakes of a car are so perfect that the car st...

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    11. A player throwsa a ball upwards with an initial speed of 29.4 ms^(-1)...

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    12. A trains is moving on borizonatal rails with a uniform acceleration a....

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    13. If the acceleration of the paarticle is constant in magnitude but not ...

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    14. How can the distance travelled by calculated from velcity-time graph i...

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    15. What is wrong with the speed time graph as shown in Fig.2 (b) .25.

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    16. A ball is thowon vertically upwards. Draw its velcity-time curve.

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    17. What does the area under acceleration-time graph for any interal of ti...

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    18. What does the slope of a speed-time graph indicate ?

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    19. What is the nature of the displacement time curve of a body moving wit...

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    20. What is the ration of the sistance travelled by constan a body falling...

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