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Question
At a harbour, a boat is standing and wind is blowing at a speed of √2 m/sec. due to which, the flag on the boat flutters along northeast. Now the boat enters in to river, which is flowing with a velocity of 2 m/sec. due north. The boat starts with zero velocity relative to the river and its constant acceleration relative to the river is 0.2m/sec2 due east. In which direction will the flag flutter at 10 seconds?
At a harbour, a boat is standing and wind is blowing at a speed of √2 m/sec. due to which, the flag on the boat flutters along northeast. Now the boat enters in to river, which is flowing with a velocity of 2 m/sec. due north. The boat starts with zero velocity relative to the river and its constant acceleration relative to the river is 0.2m/sec2 due east. In which direction will the flag flutter at 10 seconds?
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Solution
The correct option is B south-west
Vw=1^i+1^j
V=at
V=(0.2)10=2m/sec.
Vboat=2^i+2^j
Vw/boat=Vw−Vboat
Vw/boat=(1^i+1^j)−(2^i+2^j)=−1^i−1^j
So, the flag will flutter towards south-west.
Vw=1^i+1^j
V=at
V=(0.2)10=2m/sec.
Vboat=2^i+2^j
Vw/boat=Vw−Vboat
Vw/boat=(1^i+1^j)−(2^i+2^j)=−1^i−1^j
So, the flag will flutter towards south-west.
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