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2 September, 13:21

Moustapha jones drives east at 100km/hr for 3 hours then back west at 80km/hr for 1.5 hours. which pair of answers gives his average speed and average velocity?

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  1. 2 September, 13:36
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    The average speed of the car is 93.33 km/hr and the average velocity of the car is 40 km/hr.

    The total distance cover in east direction is=100*3=300 km

    The total distance cover in the west direction=80*1.5=120 km

    The total distance covered is = 300+120=420 km

    And Total displacement of the car is = 300-120=180 km

    As we know that the average speed is given as

    Avg Speed = Total Distance / Total time

    =420/4.5=93.33 km/hr

    As we know that the average velocity is given as

    Avg Speed = Total Displacement / Total time

    =180/4.5=40 km/hr

    Therefore, The average speed of the car is 93.33 km/hr and the average velocity of the car is 40 km/hr.
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