(a) In the figure here, what are the signs of the x components of
$\vec{d_1}$ and $\vec{d_2}$? (b) What are the signs of the y components of $\vec{d_1}$ and $\vec{d_2}$?
(c) What are the signs of the x and y components of $\vec{d_1} + \vec{d_2}$?
Answer:
(a) positive, positive
(b) positive, negative
(c) positive, positive
y
$\vec{d_2}$
x
$\vec{d_1}$