# Physics

A - A girl delivering newspapers covers her route by traveling 4 blocks west, 2 blocks north, then 6 blocks east. What is her resultant displacement? Answer in units of blocks.

B - What is her direction? Use counterclockwise as the positive angular direction from due east, between the limits of −180◦ and 180◦. Answer in units of ◦.

C - What is her total distance? Answer in units of blocks.

1. went total of 6-4 = 2 blocks east (x axis)
went 2 blocks north (y axis)

net is sqrt (2^2+2^2) = 2 sqrt 2 northeast which is 45 degrees north of east

posted by Damon
2. A. Disp. = -4 + 2i + 6 = 2 + 2i.
Disp. = sqrt(2^2+2^2) = 2.83 Blocks.

B. Tan A = 2/2 = 1. A = 45o N. of E.

C. Distance = 4 + 2 + 6 = 12 Blocks.

posted by Henry

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