Kinematics Question 329
Question: A boat takes two hours to travel 8 km and back in still water. If the velocity of water is 4 km/h, the time taken for going upstream 8 km and coming back it’s [EAMCET 1990]
Options:
A) To fall vertically down
B) To fall at an angle going from west to east
C) To fall at an angle going from east to west
D) The information given it’s insufficient to decide the direction of rain.
Correct Answer: B A man it’s sitting in a bus and travelling from west to east, and the rain drops are appears falling vertically down. $ v _{m}= $ velocity of man $ v _{r}= $ Actual velocity of rain Which is falling at an angle $ \theta $ with vertical $ v _{rm}= $ velocity of rain w.r.t. to moving man If the another man observe the rain then he will find that actually rain falling with velocity $ v _{r} $ at an angle going from west to east.Show Answer
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