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13 August, 07:55

A race car travels northward on a straight, level track at a constant speed travels 0.754 km in 25.0 s. The return trip over the same track is made in 30.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run

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  1. 13 August, 10:26
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    27.42 m/s

    Explanation:

    Data provided in the question:

    Distance traveled on a straight track = 0.754 km

    Time taken to cover while going = 25.0 s

    Time taken for the return = 30.0 s

    Now,

    Total distance covered = 2 * 0.754

    = 1.508 Km

    = 1508 m

    Total time taken = 25 + 30 = 55 s

    Therefore,

    The average velocity of the car = Total distance : Total time

    = 1508 : 55

    = 27.42 m/s
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