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need_help!
If you go exactly twice round a field of perimeter 280m, what will your displacement be?
Displacement is the difference between where you end up and where you start.
If you go around the field exactly twice, how far are you from where you started?
Yes, I know that :) But what was the first and last point you went to?
Think about it (and draw a diagram!)
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)
Did he return to the same point?
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.
And that's the same as not going anywhere at all!
Which means zero :)) I can't believe I didn't know this one :P Thanksss!! :D
Two primary tools for physics: math skills and common sense!
Math skills= Calculator!! And common sense= I think I need to work on that a bit.
What about this one though?
If you go exactly twice round a field of perimeter 340m, what is the distance you travel?
You know the distinction between distance and displacement?
Then imagine if you did twice that perimeter in a straight line, how far did you go?
(probably best to ask new questions as new threads)