Michael L. answered 02/05/16
Tutor
New to Wyzant
Intuitively explains the concepts in Math and Science
Hi Kayla,
The position vector can be written as
A = 6 i + y j
i points in the x-direction and j points in the y-direction. The magnitude of the vector is its dot product with itself
|A|2 = A·A
102 = (6 i + y j)•(6 i+ y j) Note that i•j = 0, and i•i = j•j = 1
100 = 36 + y2
64 = y2 The vertical component of the vector is 8 cm