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physics

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A non stop bus goes from one station to another at a speed of 54 km/h. The bus returns from the second station to first station at a speed of 36 km/h. Find the average speed of the bus.

  • physics -

    figure the time it took going, and coming.

    t=d/v where d is the distance each way.

    then
    add the times

    avgvelocity=2d/total time

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