I went for a walk the other day. I went four blocks east, then seven blocks south, then one block west and finally eight blocks north
a. What distance did I travel?
b. What's my displacement?

a) distance is 4+7+1+8=20 blocks

b) displacement is 10 blocks

Explanation:

find displacement: x and y

x axis displacement = 4-1 = 3 blocks

y axis displacement = -7+8= 1 block

displacement = the square root of 3^2 + 1^2

= 9+1 = 10 blocks.

You can find the angle of displacement with respect to the initial position using trig identities, if you wish.

b is the correct answer

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i do not get it   at all