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A ball is thrown up and attains a maximu...

A ball is thrown up and attains a maximum height of 19.6 m. Its initial speed was

A

`9.8ms^(-1)`

B

`44.3ms^(-1)`

C

`19.6ms^(-1)`

D

`98ms^(-1)`

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  • A ball is thrown up and attains a maximum height of 100 m .Its initial speed was

    A
    `9.8ms^(-1)`
    B
    `44.2ms^(-1)`
    C
    `19.6ms^(-1)`
    D
    none of these

  • 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 of mass 50 g is thrown upwards. It rises to a maximum height of 100m. At what height its KE is reduced to 70% ?

    A
    30 m
    B
    40 m
    C
    60 m
    D
    70 m

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