anonymous
  • anonymous
please help with...
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1 Attachment
Hunus
  • Hunus
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.
anonymous
  • anonymous
Okay Nath what is it about this problem that is confusing to you?

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Hunus
  • Hunus
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)
anonymous
  • anonymous
x=5.7 cos(45) i added the 2.6 to 3.1
Hunus
  • Hunus
Not quite. For the x component 2.6 wouldn't be a part of it because none of it is in the x direction
anonymous
  • anonymous
you mean that 3.1 is not completely horiziontal
Hunus
  • Hunus
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
anonymous
  • anonymous
so what do i have to do
Hunus
  • Hunus
|dw:1329698312156:dw|
Hunus
  • Hunus
How far did the truck travel along the x axis?
anonymous
  • anonymous
4
Hunus
  • Hunus
What about the 3.1 km he traveled north east? Part of that displacement is along the x axis.
anonymous
  • anonymous
i know to find the x component it would be 3.1 cos(45)
Hunus
  • Hunus
That's correct :) and that plus the 4 km is how far he moved along the x axis
anonymous
  • anonymous
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
anonymous
  • anonymous
i mean i couldnt*
Hunus
  • Hunus
The 2.6 is completely vertical. The 4.0 is completely horizontal
anonymous
  • anonymous
yah
Hunus
  • Hunus
So add up the horizontal parts :)
Hunus
  • Hunus
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.
anonymous
  • anonymous
okay thank u so much

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