qqp question1: What is the (vector) displacement between positions (0.4i + 0.1j) m and (0.8i + 0.6j) m, and the distance between the two positions? question2: What is the (vector) displacement between positions (0.4i + 0.1j) m and (−0.8i + 0.6j) m, and the distance between the two positions?