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ellal

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## Homework Statement

Sophie walks 800 M [N], then 500 M [W] and finally 400 M [SE] in 25 minutes. What is her displacement and average velocity? (Using scale diagram)

## Homework Equations

a2 + b2 = c2

## The Attempt at a Solution

I tried calculating by creating separate triangles, but was not certain what to do with the 400 M [SE] as I was not given an angle.

This was my attempt, assuming that both south and east are 400 M

Y = 800 north - 400 south = 400 M north

X= -500 or 500 west + 400 east = -100 or 100 west

Using Pythagorean theorem, I calculated for size Z and got 412.3 M

Then moving forward from that to calculate the direction, I said tan-1 (100/400) equals 14 degrees.

My final answer was 412.3 M [W 14 degrees N]

Now I also do not have an answer key and this is an assignment that I can't figure out. Any help would be appreciated, thank you!