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Physics
Physics
Problem
Identify the correct expression for the average velocity
v
ˉ
\bar v
v
ˉ
of a particle that moves from position
x
1
x_1
x
1
at time
t
1
t_1
t
1
to position
x
2
x_2
x
2
at time
t
2
t_2
t
2
. a)
v
ˉ
=
∣
x
2
−
x
1
∣
t
2
−
t
1
\bar v = \dfrac{|x_2 - x_1|}{t_2 - t_1}
v
ˉ
=
t
2
−
t
1
∣
x
2
−
x
1
∣
b)
v
ˉ
=
x
2
−
x
1
t
2
+
t
1
\bar v = \dfrac{x_2 - x_1}{t_2 + t_1}
v
ˉ
=
t
2
+
t
1
x
2
−
x
1
c)
v
ˉ
=
x
2
−
x
1
t
2
−
t
1
\bar v = \dfrac{x_2 - x_1}{t_2 - t_1}
v
ˉ
=
t
2
−
t
1
x
2
−
x
1
d)
v
ˉ
=
x
2
+
x
1
t
2
−
t
1
\bar v = \dfrac{x_2 + x_1}{t_2 - t_1}
v
ˉ
=
t
2
−
t
1
x
2
+
x
1
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