Answer:
A,B,D,E,F
Explanation:
I took the test for yall.
Answer:
a) 2.41 km
b) 38.8°
Questions c and d are illegible.
Explanation:
We can express the displacements as vectors with origin on the point he started (0, 0).
When he traveled south he moved to (-3, 0).
When he moved east he moved to (-3, x)
The magnitude of the total displacement is found with Pythagoras theorem:
d^2 = dx^2 + dy^2
Rearranging:
dy^2 = d^2 - dx^2
![dy = \sqrt{d^2 - dx^2}](https://tex.z-dn.net/?f=dy%20%3D%20%5Csqrt%7Bd%5E2%20-%20dx%5E2%7D)
![dy = \sqrt{3.85^2 - 3^2} = 2.41 km](https://tex.z-dn.net/?f=dy%20%3D%20%5Csqrt%7B3.85%5E2%20-%203%5E2%7D%20%20%3D%202.41%20km)
The angle of the displacement vector is:
cos(a) = dx/d
a = arccos(dx/d)
a = arccos(3/3.85) = 38.8°
I think the answer is A
.
im not the best with physics but i think its right