Question on: JAMB Physics - 2009
An air craft attempt too fly due north at 100 kmh-1. If the wind blows against it from east to west at 60 kmh-1, its resultant velocity is
A
117 kmh-1, N31oE
B
127 kmh-1, N31oE
C
117 kmh-1, N31oW
D
127 kmh-1, N31oW
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Correct Option: C
R2 = 1002 + 602
10000 + 3600 = 13600
R = √13600 = 117km
60kml & = tan = 60/100
tan-1 0.6
= 31o west of the North
117km N31ow
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