A football field is 160 feet wide and 360 feet in length. What is the distance around the field?
1 answer:
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Answer:
Step-by-step explanation:
The unit vector for a nonzero vector, say u, in the direction of u is given by:
û = ---------------(i)
Where;
|u| = magnitude of vector u
From the question;
u = (4, -4)
First let's calculate the magnitude of u as follows;
|u| =
|u| =
|u| = =
Now, substitute u and |u| into equation (i) as follows;
û =
û =
û =
Therefore, the unit vector is