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need_help!

  • 3 years ago

If you go exactly twice round a field of perimeter 280m, what will your displacement be?

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  1. CliffSedge
    • 3 years ago
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    Displacement is the difference between where you end up and where you start.

  2. CliffSedge
    • 3 years ago
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    If you go around the field exactly twice, how far are you from where you started?

  3. need_help!
    • 3 years ago
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    Yes, I know that :) But what was the first and last point you went to?

  4. CliffSedge
    • 3 years ago
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    Think about it (and draw a diagram!)

  5. need_help!
    • 3 years ago
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    Okay! I will try :D

  6. CliffSedge
    • 3 years ago
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    Physics takes some imagination. You should always help your imagination out by drawing a picture, but this one is easier than you think. (here's a hint: the perimeter of the field is irrelevant)

  7. need_help!
    • 3 years ago
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    Did he return to the same point?

  8. CliffSedge
    • 3 years ago
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    Yep. If you got exactly twice around something that's the same as going exactly once around - you'll end up in the exact same place you started from.

  9. CliffSedge
    • 3 years ago
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    And that's the same as not going anywhere at all!

  10. need_help!
    • 3 years ago
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    Which means zero :)) I can't believe I didn't know this one :P Thanksss!! :D

  11. CliffSedge
    • 3 years ago
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    Two primary tools for physics: math skills and common sense!

  12. need_help!
    • 3 years ago
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    Math skills= Calculator!! And common sense= I think I need to work on that a bit.

  13. need_help!
    • 3 years ago
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    What about this one though?

  14. need_help!
    • 3 years ago
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    If you go exactly twice round a field of perimeter 340m, what is the distance you travel?

  15. CliffSedge
    • 3 years ago
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    You know the distinction between distance and displacement?

  16. need_help!
    • 3 years ago
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    Yes

  17. CliffSedge
    • 3 years ago
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    Then imagine if you did twice that perimeter in a straight line, how far did you go?

  18. CliffSedge
    • 3 years ago
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    (probably best to ask new questions as new threads)

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