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Q.

A car runs along horizontal path at a speed of 20m/s. The driver observes the rain hitting his car at 60° to the vertical. If the rain is actually falling vertically the speed of the rain drop is nearly

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a

231 m/s

b

11.55 m/s

c

34.6 m/s

d

10 m/s

answer is B.

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Detailed Solution

See. figure

Question Image

From figure tan60=20V or V=20tan60
=203=1155m/s

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