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please answer question no. B5 IN DETAIL WITH VECTTOR CONCEPT THANKS
Dear student vel. of boat w.r.t wind Vbw = -2jvel. of boat w.r.t water current Vbc = -4igiven vel. of boat w.r.t earth(water current + wind): Vb(w+c) = 6i + 8jso, Vb - Vw = -2j .............(1) Vb - Vc = -4i .............(2) Vb - V(w+c) = 6i + 8j . ............(3)Let vel. of boat alone due to its power is = (ai+bj)From above (1) + (2) -(3) givesVb = -10.(i + j)The magintude of vel. of boat = 14.14 kmphdirection is 45 degrees south west RegardsArun
vel. of boat w.r.t wind Vbw = -2j
vel. of boat w.r.t water current Vbc = -4i
given vel. of boat w.r.t earth(water current + wind): Vb(w+c) = 6i + 8j
so, Vb - Vw = -2j .............(1)
Vb - Vc = -4i .............(2)
Vb - V(w+c) = 6i + 8j . ............(3)
Let vel. of boat alone due to its power is = (ai+bj)
From above (1) + (2) -(3) gives
Vb = -10.(i + j)
The magintude of vel. of boat = 14.14 kmph
direction is 45 degrees south west
Regards
Arun
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