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A small plane is 150km south of the equator. The plane is flying at 220km/h at a heading of 30 degrees to the west of north. In how many minutes will the plane cross the equator?

  • Physics -

    North speed = 220 cos 30 = 190.5 km/60 min
    = 3.18 km/min

    150 km /3.18 km/m = 47.2 minites

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