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Physics
Physics
Problem
For a particle whose positions are
x
1
x_1
x
1
at time
t
1
t_1
t
1
and
x
2
x_2
x
2
at time
t
2
t_2
t
2
, the average velocity
v
a
v
g
v_{avg}
v
a
v
g
between these instants is a)
x
2
+
x
1
t
2
−
t
1
\dfrac{x_2+x_1}{t_2-t_1}
t
2
−
t
1
x
2
+
x
1
b)
x
2
−
x
1
t
2
+
t
1
\dfrac{x_2-x_1}{t_2+t_1}
t
2
+
t
1
x
2
−
x
1
c)
x
2
−
x
1
t
2
−
t
1
\dfrac{x_2-x_1}{t_2-t_1}
t
2
−
t
1
x
2
−
x
1
d)
∣
x
2
−
x
1
∣
t
2
−
t
1
\dfrac{|x_2-x_1|}{t_2-t_1}
t
2
−
t
1
∣
x
2
−
x
1
∣
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