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Physics
Problem
Which one of the following expressions gives the magnitude of the displacement when a particle moves from point
(
x
1
,
y
1
)
(x_1,y_1)
(
x
1
,
y
1
)
to point
(
x
2
,
y
2
)
(x_2,y_2)
(
x
2
,
y
2
)
in a plane? a)
(
x
2
+
x
1
)
2
+
(
y
2
+
y
1
)
2
\sqrt{(x_2+x_1)^2+(y_2+y_1)^2}
(
x
2
+
x
1
)
2
+
(
y
2
+
y
1
)
2
b)
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
c)
∣
x
2
−
x
1
∣
+
∣
y
2
−
y
1
∣
|x_2-x_1|+|y_2-y_1|
∣
x
2
−
x
1
∣
+
∣
y
2
−
y
1
∣
d)
x
2
2
+
y
2
2
\sqrt{x_2^{2}+y_2^{2}}
x
2
2
+
y
2
2
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