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Rain is falling vertically with a veloci...

Rain is falling vertically with a velocity of 3`kmh^-1`. A man walks in the rain with a velocity of 4`kmh^-1`. The rain drops will fall on the man with a velocity of

A

5`kmh^-1`

B

4`kmh^-1`

C

3`kmh^-1`

D

1`kmh^-1`

Text Solution

Verified by Experts

The correct Answer is:
A

`vec(V_(RG))=3hatj-4hati`
`V_(RG)=5(km)/(sec)`.
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Knowledge Check

  • Rain is falling vertically downwards with a speed of 4 km h^-1 . A girl moves on a straight road with a velocity of 3 km h^-1 . The apparent velocity of rain with respect to the girl is.

    A
    `3 km h^-1`
    B
    `4 km h^-1`
    C
    `5 km h^-1`
    D
    `7 km h^-1`

  • Rain drops fall with terminal velocity due to

    A
    buoyancy
    B
    viscosity
    C
    low weight
    D
    surface tension

  • Raindrops are falling vertically with a velocity 10 m//s . To a cyclist moving on a straight road the rain drops appear to be coming with a velocity of 20m//s . The velocity of cyclist is :-

    A
    `10m//s`
    B
    `10sqrt3m//s`
    C
    `20m//s`
    D
    `20sqrt3m//s`

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