posted by Ryomasa .
Three Displacement Vectors of a Croquet Ball are shown, where A is 20.0 units at 90 degrees, B is 40.0 units at 45.0 degrees, and C is 30.0 at 315 degrees. Find:
a) The resultant in unit-vector notation.
b) The magnitude and direction of the resultant displacement.
Sorry guys, I seriously don't get this thing.
You are lost in the process of resolving a vector into components, then the addition of those components.
Here is what I suggest. Go to the nearest college bookstore, or Barnes Noble, or such, and get the study guide
Schaum's Outline Series: College Physics. There are a a number, I prefer the one for Scientists and Engineers. This will cost you about 18 dollars, it is first rate with good drawings, take a look.