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When a ball is thrown vertically upwards...

When a ball is thrown vertically upwards, at the maximum height

A

the velocity is zero and therefore there isno acceleration acting on the particle

B

the acceleration is present and therefore velocity is not zero

C

the acceleration depends on the velocity as `a = dv/dt`

D

the acceleration is independent of the velocity

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Knowledge Check

  • A ball is thrown vertically upward attains a maximum height of 45 m. The time after which velocity of the ball become equal to half the velocity of projection ? (use g = 10 m//s^(2) )

    A
    2 s
    B
    1.5 s
    C
    1 s
    D
    0.5 s

  • A ball thrown vertically upwards after reaching a maximum height h returns to the starting point after a time of 10 s. Its displacement after 5 s is

    A
    h
    B
    2h
    C
    10h
    D
    20h

  • AN object is thrown vertically upward and it reaches a maximum height 'h' from the ground. During its flight, on reaching (3)/(4) of height 'h', the object will acquire

    A
    less P.E and more K.E
    B
    same P.E and K.E
    C
    more P.E and less K.E
    D
    only K.E

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