A girl delivering newspapers travels 1 blocks west, 3 blocks north, then 4 blocks east. what is the magnitude of her resultant displacement? answer in units of blocks.
Well, determine the x and y components of the displacement. Vx = (-1) + 4 = 3 Vy = 3 = 3
Then use a^2 + b^2 = c^2. a^2 + b^2 = c^2 c = sqrt(a^2 + b^2) c= sqrt((3)^2 + (3)^2) c = sqrt(9 + 9) c = sqrt(18) c =~ 4.2 blocks Determine the angle using arctangent.
arctan(3/3) = Theta Theta = 45 degrees north of east
(by 'Theta', I mean the angle you are wishing to find)
_Part 3_
Since distance is a scalar, simply add up all the distances.
