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A body is projected upwards with a veloc...

A body is projected upwards with a velocity u. It passes through a certain point above the ground after `t_(1)` second. The time after which the body passes through the same point during the return journey is:

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The correct Answer is:
east
Direction of flag=Resultant direction of the wind velocity and the opposite of boat vlocity
`rArr vec(v)_(w)-vec(v)_(B)=72/sqrt(2)(hat(i)+hat(j))-51 hat(j)`
`=36sqrt(2) hat(i)+(36sqrt(2)-51)hat(i)=36sqrt(2)hat(i)` (EAST)
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ALLEN-MOTION IN A PALNE-EXERCISE-04[A]
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