Question

A fish and bird are moving  as shown in figure. Find the velocity of bird as observed by fish.

1148440
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A

upwards

B

downwards

C

upwards

D

downwards

Hard
Solution
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Correct option is A)

Distance between bird and fish as observed by fish
Differentiating w.r.t. 't'

velocity of bird observed by fish

velocity of fish

velocity of bird

Taking downward direction as ve

m/s
i.e., m/s upward.

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