1. The problem statement, all variables and given/known data The components of a vector V are often written (Vx, Vy, Vz). What is the z component of a vector which is the sum of the two vectors, V1 and V2, whose components are (2.61, 1.72, 0.00) and (3.84, -4.54, -1.90)? b) Calculate the length of this vector. 2. Relevant equations 3. The attempt at a solution Okay so for part A, I got -1.90 (vz1 + vz2) and that is correct. Part B? I don't understand how to do it. Thanks for the help!