alleryThe projection of vector $\vec A$ on vector $\vec B$ is given by
A$\dfrac{\vec A\times\vec B}{|\vec B|}$
B$\dfrac{\vec A\cdot\vec B}{|\vec B|}$
C$\dfrac{|\vec A|}{\vec B}$
D$\dfrac{\vec A\cdot\vec B}{|\vec A|}$
Answer & Solution
Correct answer: B. $\dfrac{\vec A\cdot\vec B}{|\vec B|}$
The notes explicitly give the projection of $\vec A$ on $\vec B$ as $\dfrac{\vec A\cdot\vec B}{|\vec B|}$.
This is the scalar projection along $\vec B$.
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