O-LevelPhysicsKinematics5054/11 · Oct/Nov 2013 · Q11 Mark
When there is no wind, the engines of an airship push it due north at 20 m/s. The wind is blowing from the west at 12 m/s. Which vector diagram correctly shows how the resultant velocity R of the airship is obtained?
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Avector diagram where a 20 m/s vector points north, a 12 m/s vector points west, and the resultant R is shown as the hypotenuse from the tail of the north vector to the head of the west vector.
Bvector diagram where a 20 m/s vector points north, a 12 m/s vector points east, and the resultant R is shown as the hypotenuse from the tail of the north vector to the head of the east vector.
Cvector diagram where a 20 m/s vector points north and a 12 m/s vector points east, with resultant R connecting the tail of the east vector to the head of the north vector.
Dvector diagram where a 20 m/s vector points north and a 12 m/s vector points west, with resultant R connecting the tail of the west vector to the head of the north vector.
✓ Correct answer
A: vector diagram where a 20 m/s vector points north, a 12 m/s vector points west, and the resultant R is shown as the hypotenuse from the tail of the north vector to the head of the west vector.
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