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can any1 help me with these velocity question? watch

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    (Original post by carrotboy)
    23km = 23,000m - because there's ten laps

    d/t = 23000/480

    = 47.9ms^-1??
    That's the avg speed, not avg velocity!
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    (Original post by alexmahone)
    That's the avg speed, not avg velocity!
    will average velocity be 0?
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    (Original post by alexmahone)
    That's the avg speed, not avg velocity!
    oh, lol!

    need to catch up with my maths and phys!
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    (Original post by panjabiflower)
    will average velocity be 0?
    Yes!
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    (Original post by panjabiflower)
    hey are you referring to this post that i did?:

    i have been asked why it is more useful to know the average speed of a car over a journey than average velocity? is the answer that speed is distance travelled within a certain time and does not take into consideration direction however velocity does and many journeys will result in the average velocity being 0 due to the reasons given in the above replies? Does any1 know what else i can add? thanx

    btw GHOSH-5 thanks again for your help
    yes sorry i didnt quote...
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    can any of you guys help me with this?
    http://www.thestudentroom.co.uk/showthread.php?t=680983
 
 
 
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