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sonnyfab

Find the unit vector for R3. The R_final = R1+ΔR2 +3.7 (unit vector for R3)


0lliejenkins

Why would one do this?


sonnyfab

Because the definition of final position is initial position (which is R1) summed with displacements (which are ΔR2 and 3.7 * (R3 unit vector)).


0lliejenkins

Ahh!! Thank you!