Question

Help would be greatly appreciated!

Answer 1

V = X i + Y j expression of vector in terms of unit vectors i andj

V = 12.0 i + 9.00 j

V = (12.0^2 + 9.00^2)^1/2 = 15.0 magnitude of resultant vector

Note this is a multiple of a 3, 4, 5 right triangle

5 is the magnitude of a 3, 4, 5 right triangle the given vector is 3X the 3, 4, 5 triangle or 15