Find the correct relation between the initial position vector

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

Find the correct relation between the initial position vector r1\mathbf r_1, final position vector r2\mathbf r_2 and the displacement vector Δr\Delta \mathbf r. (a) Δr=r1−r2\Delta \mathbf r = \mathbf r_1 - \mathbf r_2 (b) Δr=r1+r22\Delta \mathbf r = \dfrac{\mathbf r_1 + \mathbf r_2}{2} (c) Δr=r2−r1\Delta \mathbf r = \mathbf r_2 - \mathbf r_1 (d) Δr=r1+r2\Delta \mathbf r = \mathbf r_1 + \mathbf r_2

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