allery$\overrightarrow{PQ} + \overrightarrow{QR}$ equals (triangle law of addition):
A$\overrightarrow{PR}$
B$\overrightarrow{RP}$
C$\overrightarrow{0}$
D$2\,\overrightarrow{PQ}$
Answer & Solution
Correct answer: A. $\overrightarrow{PR}$
By the triangle law, head-to-tail addition: $\overrightarrow{PQ} + \overrightarrow{QR} = \overrightarrow{PR}$.
This is just the geometric path from P to R.
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