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A particle of mass m strikes elastically...

A particle of mass m strikes elastically on a wall with velocity v, at an angle of `60^(@)` from the wall then magnitude of change in momentum of ball along the wall is

A

Zero

B

2mv

C

`sqrt(3)mv`

D

mv

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Knowledge Check

  • A particle of mass m strikes elastically against a wall at angle of incidence 60^@ with velocity v. The change in momentum is

    A
    mv
    B
    2mv
    C
    `(mv)/2`
    D
    `(mv)/4`

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    A
    2 m v
    B
    m v
    C
    `1/2 m v`
    D
    `0`

  • A molecule of mass m moving at a velocity v impinges elastically on the wall at an angle a with the wall. Then

    A
    the impulsive reaction of the wall is `2mv cos alpha`
    B
    the impulsive reaction of the wall is `2mvsinalpha`
    C
    the impulsive reaction of the wall is nonzero
    D
    given data is insufficient to calculate impulsive reaction of the wall

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