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engineering science N4

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Two ships leave port simultaneously. Ship A sails north-west at 30 km/h and ship B sails S 40 degrees W at 30 km/h. Calculate the velocity of ship B relative to the velocity of ship A.

  • engineering science N4 - ,

    You add them as vectors.

    Vbreltoa=velocityb-veloictya AS VECTORS

  • engineering science N4 - ,

    A = (-21.2,21.2)
    B = (-19.3,-23.0)

    B-A = (1.9,-44.2)
    = 44.2,-87.5° or 44.2km/hr S2.5°E

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