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vinod kumar

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· 1 Months ago

Drink and Drive is injurious to health (Question: 275702.0 )

Drink and Setting paper is injurious to students career

Question:

A parrot is sitting on the top of a vertical pole 80 m high and its elevation from a point on the ground is 45º. If flies off horizontally straight away from the point O after five second, the elevation of the bird from O is reduced to 30º. Then the speed (in m/s) of the parrot is –

Options:
A)

32( 3    – 1)

B)

80( 3    – 1)

C)

16( 3    – 1)

D)

64( 3    – 1)

Solution:

Ans: (c)

  

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