Question

julie and her friend are wandering around their neighborhood talking . They walk three blocks east, then two blocks south, one block west, finally two blocks north. Julie and her friend have traveled a distance of eight blocks and have a displacement of ______ blocks east

Answer 1

Answer: two

Explanation:

Answer 2

Answer:

displacement is 2 block towards East

Explanation:

first they moved three blocks East

then two block south

then one block west

finally two block North

So we will have

$\vec d_1 = 3 blocks \hat i$

$\vec d_2 = 2 blocks (-\hat j)$

$\vec d_3 = 1 block (-\hat i)$

$\vec d_4 = 2 blocks (\hat j)$

now total displacement is given as

$\vec d = (3 blocks - 1 block)\hat i + (2 block - 2 block)\hat j$

$\vec d = 2 block \hat i$

so displacement is 2 block towards East