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Physics
Physics
Problem
Which one of the following gives the definition of average speed for a journey? a)
Total displacement
Total time taken
\dfrac{\text{Total displacement}}{\text{Total time taken}}
Total time taken
Total displacement
b)
u
+
v
2
\dfrac{u+v}{2}
2
u
+
v
c)
Total distance travelled
Total time taken
\dfrac{\text{Total distance travelled}}{\text{Total time taken}}
Total time taken
Total distance travelled
d)
∑
i
=
1
n
v
i
n
(
for equal time intervals
)
\dfrac{\sum_{i=1}^{n} v_i}{n}\,\, (\text{for equal time intervals})
n
∑
i
=
1
n
v
i
(
for equal time intervals
)
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