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    KateT's Avatar
    KateT Posts: 1, Reputation: 1
    New Member
     
    #1

    Jan 6, 2013, 10:50 AM
    Average Velocity
    A car is traveling 25 m/s for 30 minutes and 10 m/s for an hour. What is the average speed?
    Abhimanyu Pudi's Avatar
    Abhimanyu Pudi Posts: 77, Reputation: 4
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    #2

    Jan 6, 2013, 01:11 PM
    Average Speed = Total distance traveled / Total time taken

    In the first part, the velocity is 25 m/s and time taken is 30 min = 1800 s
    So, the distance traveled = velocity x time = 25x1800 = 45000 m

    In the second part, the velocity is 10 m/s and time taken is 60 min = 3600 s
    So, the distance traveled = velocity x time = 10x3600 = 36000 m

    So, the total distance traveled = 45000 m + 36000 m = 81000 m
    Total time taken = 1800 s + 3600 s = 5400 s

    Average Speed = 81000 m / 5400 s = 15 m/s

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