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# can any1 help me with these velocity question? watch

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1. (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!
2. (Original post by alexmahone)
That's the avg speed, not avg velocity!
will average velocity be 0?
3. (Original post by alexmahone)
That's the avg speed, not avg velocity!
oh, lol!

need to catch up with my maths and phys!
4. (Original post by panjabiflower)
will average velocity be 0?
Yes!
5. (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...
6. can any of you guys help me with this?

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