A car travels from Bangalore to Mumbai and returns in 20 hours. What is the average velocity and average speed
of the car if odometer reading of the car, when it started was 2200 km and when finished was 3800 km?
Answers
Answered by
4
Explanation:
Given, displacement of the car =
0
(as initial position is same as final position )
When the car started the journey, the odometer reading was
2200
k
m
and when the car finished the journey, the odometer reading was
3800
k
m
.
∴
Distance covered =
3800
−
2200
=
1600
k
m
.
Time taken =
20
h
o
u
r
s
.
We know:
Average velocity
=
T
o
t
a
l
d
i
s
p
l
a
c
e
m
e
n
t
T
o
t
a
l
t
i
m
e
Average velocity
=
0
k
m
p
h
Average speed
=
T
o
t
a
l
d
i
s
t
a
n
c
e
T
o
t
a
l
t
i
m
e
Average speed
=
1600
20
=
80
k
m
p
h
∴
Average velocity of the car is
0
k
m
p
h
and average speed of the car is
80
k
m
p
h
.
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