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Starting from rest, A lift moves up with...

Starting from rest, A lift moves up with an acceleration of `2 ms^(-2)`. In this lift , a ball is dropped from a height of `1.5m` (with respect to floor of lift). The time taken by the ball to reach the floor of the lift is (`g=10 ms^(-2)`)

A

`0.3 s`

B

`0.2 s`

C

`0.16 s `

D

`0.5 s`

Text Solution

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The correct Answer is:
D
`N//A`
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Knowledge Check

  • A lift is moving with a uniform downward acceleration of 2 m//s^(2) . A ball is dropped from a height 2 m from the floor of lift. Find the time taken after which ball will strke the floor ? (Take g = 10 m//s^(2) )

    A
    1.25 m
    B
    `sqrt2 sec`
    C
    `2 sec`
    D
    `(1)/(2) sec`

  • A lift starts ascending with an acceleration of 4 ft//s^(2) . At the same time a bolt falls from its cieling 6ft above the floor. Find the time taken by it to reach the floor. g= 32 ft//s^(2)

    A
    `(1)/(sqrt(3))s`
    B
    `(1)/(3)s`
    C
    `(1)/(sqrt(5))s`
    D
    `(1)/(5)s`

  • A lift moves downwards with an acceleration a. A passenger in the lift drops a book. The acceleration of the book with respect to the floor of lift is- (assume acceleration due to gravity = g)

    A
    g
    B
    a
    C
    `g-a`
    D
    `g+a`

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