The resultant velocity of the duck is 7.5 m/s in the south.
given-
Speed of duck: 10 m/s heading south
Wind speed is 2.5 m/s.
to ascertain the outcome velocity. We would need to deduct the gust of wind's velocity from the duck's velocity because we are aware that the duck is flying against it.
The wind gust (headwind), which approaches the duck from the front, is implied to have a negative effect on the duck's final velocity.
Speed as a result, /V/ = 10 - 2.5
Southbound speed, /V/ = 7.5 m/s.
The duck's resulting southward velocity is 7.5 m/s.
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