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A ball is projected vertically upward wi...

A ball is projected vertically upward with an initial velocity of `50 ms^(-1) ` at t = 0s . A t t = 2s , another ball is projected vertically upward with same velocity .At t = ______ s, second ball will meet the first ball `( g = 10 ms^(-2))`

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Knowledge Check

  • A ball thrown vertically upwards with an initial velocity of 1.4 m/s returns in 2s. The total dispalcement of the ball is

    A
    22.4 cm
    B
    zero
    C
    44.8 m
    D
    33.6 m

  • A ball thrown vertically upwards with an initial velocity of 1.4 m//s. The total displcement of the ball is

    A
    `22.4cm`
    B
    zero
    C
    `44.8m`
    D
    `33.6m`

  • A ball is projected vertically up with speed 20 m/s. Take g=10m//s^(2)

    A
    It covers a distance of 5 m in 2nd second of its motion
    B
    The displacement in 2nd and 3rd second are equal
    C
    The distance covered in 2nd and 3rd second are equal
    D
    The average speed for first 4 seconds is zero