Calculating Displacement and Distance Traveled in a Vector Problem

  • Thread starter Thread starter xkarenx
  • Start date Start date
AI Thread Summary
The girl delivering newspapers travels a total of 2 blocks west, 4 blocks north, and 9 blocks east. To calculate her resultant displacement, one must find the hypotenuse of the triangle formed by her movements, which involves subtracting the westward distance from the eastward distance. The total distance she travels is the sum of all blocks covered, amounting to 15 blocks. The direction of her resultant displacement can be expressed in degrees using counterclockwise notation from due east. Visualizing the problem on graph paper can aid in understanding the triangle and calculating the necessary values.
xkarenx
Messages
2
Reaction score
0
A girl delivering newspapers cover her route by traveling 2 blocks west, 4 blocks north, then 9 blocks east.
a) What is her resultant displacement?

b) What is her direction? Use counterclockwise as the positive angular direction from due east, between the limites of -180 degrees and 180 degrees.

c)What is the total distance she travels?

I really need this answer please
 
Physics news on Phys.org
try to draw it on graph paper.
 
I cannot figure out the displacement either way
does anyone know what it is?
 
I'll tell you that you will need to find the hypotenuse of a triangle.
If you draw it out, you'll be able to see the triangle. (You'll have to subtract something to see it.)
 
Last edited by a moderator:
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top