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Physics
Problem
A person travels along a straight road for half the distance with velocity
V
1
V_1
V
1
and the remaining half distance with velocity
V
2
V_2
V
2
. The average velocity is given by [MP PMT 2001] (a)
V
1
V
2
V_1 V_2
V
1
V
2
(b)
V
2
2
V
1
2
\frac{V_2^2}{V_1^2}
V
1
2
V
2
2
(c)
V
1
+
V
2
2
\frac{V_1 + V_2}{2}
2
V
1
+
V
2
(d)
2
V
1
V
2
V
1
+
V
2
\frac{2V_1 V_2}{V_1 + V_2}
V
1
+
V
2
2
V
1
V
2
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