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Physics
Physics
Problem
For two objects A and B moving with velocities
v
A
\mathbf{v}_A
v
A
and
v
B
\mathbf{v}_B
v
B
respectively, which of the following expressions represents the velocity of A with respect to B? a)
v
A
+
v
B
\mathbf{v}_A+\mathbf{v}_B
v
A
+
v
B
b)
∣
v
A
∣
−
∣
v
B
∣
|\mathbf{v}_A|-|\mathbf{v}_B|
∣
v
A
∣
−
∣
v
B
∣
c)
v
A
−
v
B
\mathbf{v}_A-\mathbf{v}_B
v
A
−
v
B
d)
v
B
−
v
A
\mathbf{v}_B-\mathbf{v}_A
v
B
−
v
A
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