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Physics
Physics
Problem
Which of the following expressions gives the velocity of body A relative to body B? a)
v
⃗
B
−
v
⃗
A
\vec v_B-\vec v_A
v
B
−
v
A
b)
v
⃗
A
−
v
⃗
B
\vec v_A-\vec v_B
v
A
−
v
B
c)
v
⃗
A
+
v
⃗
B
\vec v_A+\vec v_B
v
A
+
v
B
d)
v
⃗
A
+
v
⃗
B
2
\dfrac{\vec v_A+\vec v_B}{2}
2
v
A
+
v
B
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