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nath

  • 3 years ago

please help with...

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  1. nath
    • 3 years ago
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  2. Hunus
    • 3 years ago
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    Just add the components of all of the vectors to find the resultant displacement. First he moves 2.6 km north, then he moves 4 km east then he moves 3.1 km north east.

  3. PeterAntimatter
    • 3 years ago
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    Okay Nath what is it about this problem that is confusing to you?

  4. Hunus
    • 3 years ago
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    The first displacement he moves 2.6 km but he has no horizontal displacement. The second displacement he moves 4 km which is all horizontal. The third displacement he moves 3.1 km which is only part horizontal (You should be able to figure out the horizontal component from the last post)

  5. nath
    • 3 years ago
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    x=5.7 cos(45) i added the 2.6 to 3.1

  6. Hunus
    • 3 years ago
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    Not quite. For the x component 2.6 wouldn't be a part of it because none of it is in the x direction

  7. nath
    • 3 years ago
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    you mean that 3.1 is not completely horiziontal

  8. Hunus
    • 3 years ago
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    Yes. Also, the component that is 2.6 km is all in the y direction so none of it will be on the x component

  9. nath
    • 3 years ago
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    so what do i have to do

  10. Hunus
    • 3 years ago
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    |dw:1329698312156:dw|

  11. Hunus
    • 3 years ago
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    How far did the truck travel along the x axis?

  12. nath
    • 3 years ago
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    4

  13. Hunus
    • 3 years ago
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    What about the 3.1 km he traveled north east? Part of that displacement is along the x axis.

  14. nath
    • 3 years ago
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    i know to find the x component it would be 3.1 cos(45)

  15. Hunus
    • 3 years ago
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    That's correct :) and that plus the 4 km is how far he moved along the x axis

  16. nath
    • 3 years ago
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    so i could add the 2.6 to the 3.1 because the 2.6 is completely horizontal while the 3.1 is partially horizontal. however i have to take it into account

  17. nath
    • 3 years ago
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    i mean i couldnt*

  18. Hunus
    • 3 years ago
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    The 2.6 is completely vertical. The 4.0 is completely horizontal

  19. nath
    • 3 years ago
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    yah

  20. Hunus
    • 3 years ago
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    So add up the horizontal parts :)

  21. Hunus
    • 3 years ago
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    I'm about to have to head out :/ sorry I couldn't help you finish the problem. Just add up all the x components of all the vectors and all the y components of the vectors and this will create a new vector with the x component you just calculated and the y component you just calculated.

  22. nath
    • 3 years ago
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    okay thank u so much

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