Answer:
D.{-4, -2, 2}
Step-by-step explanation:
all y components
same y value are not repeated
Well, ....... X=57/2 or 28.5 but not are equivalent
Answer:
15
Step-by-step explanation:
Answer:
Option c
Step-by-step explanation:
We are being asked to find unit vector u given the direction as x = < 40, 9 >. In most cases it would be v = < 40, 9 >, but it is the same concept.
To find the magnitude, given 40 and 9, you would do the following -
![| v | = \sqrt{40^2 + 9^2},\\| v | = \sqrt{1600 + 81},\\\\| v | = 41](https://tex.z-dn.net/?f=%7C%20v%20%7C%20%3D%20%5Csqrt%7B40%5E2%20%2B%209%5E2%7D%2C%5C%5C%7C%20v%20%7C%20%3D%20%5Csqrt%7B1600%20%2B%2081%7D%2C%5C%5C%5C%5C%7C%20v%20%7C%20%3D%2041)
We got the magnitude to be 41. Now let us find unit vector u through the following calculations -
![u = < 40, 9 > / 41,\\u = < 40 / 41, 9 / 41 >](https://tex.z-dn.net/?f=u%20%3D%20%3C%2040%2C%209%20%3E%20%2F%2041%2C%5C%5Cu%20%3D%20%3C%2040%20%2F%2041%2C%209%20%2F%2041%20%3E)
And there you have it! <u><em>The solution is option c! </em></u>