Review Questions 1. P and Q are two points in a 3-D space. How are the position related? vectors PpQ = and rop A) rpQ = rop B) PQ-TOP = C) PQ == 1/rop PQ D) rpo = 2 rop 2. If F and r are force and position vectors, respectively, in SI units, what are the units of the expression (r* (F/F))? A) Newton C) Meter B) Dimensionless D) Newton-Meter E) The expression is algebraically illegal.