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Mathematics
Problem
Which one of the following gives the magnitude of a vector having components
v
x
,
v
y
,
v
z
v_x, v_y, v_z
v
x
,
v
y
,
v
z
along the
x
x
x
-,
y
y
y
-, and
z
z
z
-axes respectively? a)
∣
v
x
∣
+
∣
v
y
∣
+
∣
v
z
∣
|v_x|+|v_y|+|v_z|
∣
v
x
∣
+
∣
v
y
∣
+
∣
v
z
∣
b)
v
x
2
+
v
y
2
+
v
z
2
\sqrt{v_x^{2}+v_y^{2}+v_z^{2}}
v
x
2
+
v
y
2
+
v
z
2
c)
v
x
2
+
v
y
2
\sqrt{v_x^{2}+v_y^{2}}
v
x
2
+
v
y
2
d)
v
x
+
v
y
+
v
z
v_x+v_y+v_z
v
x
+
v
y
+
v
z
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