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Physics
Physics
Problem
Which of the following expressions represents the average velocity
v
ˉ
\bar v
v
ˉ
of a body that undergoes a net displacement
Δ
x
\Delta x
Δ
x
in time
t
t
t
? a)
v
ˉ
=
u
+
v
2
\bar v = \dfrac{u+v}{2}
v
ˉ
=
2
u
+
v
b)
v
ˉ
=
2
Δ
x
t
\bar v = \dfrac{2\,\Delta x}{t}
v
ˉ
=
t
2
Δ
x
c)
v
ˉ
=
Δ
x
t
\bar v = \dfrac{\Delta x}{t}
v
ˉ
=
t
Δ
x
d)
v
ˉ
=
total distance
t
\bar v = \dfrac{\text{total distance}}{t}
v
ˉ
=
t
total distance
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