Solve
Study
Textbooks
Guides
Use app
Login
>>
Class 11
>>
Physics
>>
Motion in a Straight Line
>>
Speed and Velocity
>>
A car covers the first half the distance
Question
A car covers the first half the distance between two places at 40 km/h another half at 60 km/h, the average speed of car
A
40 km/h
B
48 km/h
C
50 km/h
D
60 km/h
Medium
Open in App
Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is B)
Letx consider,
x
=
total distance covered by the car,
Time taken to complete the half distance with velocity
v
=
4
0
k
m
/
h
,
t
1
=
2
×
4
0
x
=
8
0
x
h
r
. . . . .(1)
The time taken to complete another half distance with velocity
u
=
6
0
k
m
/
h
t
2
=
2
×
6
0
x
=
1
2
0
x
h
r
The total time taken,
t
=
t
1
+
t
2
t
=
8
0
x
+
1
2
0
x
=
4
8
x
h
r
The average speed of the car,
v
a
v
g
=
x
/
4
8
x
=
4
8
k
m
/
h
The correct option is B.
Solve any question of
Motion in a Straight Line
with:-
Patterns of problems
>
Was this answer helpful?
0
0
Similar questions
A car travels half the distance with constant velocity
5
0
km/h and another half with a constant velocity of
4
0
km/h, along a straight line. The average velocity of the car in km/h is?
Medium
View solution
>
A car travels the first half of the journey at 40
k
m
/
h
o
u
r
and the second half at 60
k
m
/
h
o
u
r
.The average speed of a car is -
Medium
View solution
>
A vehicle travels half or the total distance with speed
3
6
k
m
/
h
and next half with
5
4
k
m
/
h
. The average speed is
Medium
View solution
>
A car has to cover the distance
6
0
k
m
. If half of the total time it travels with speed
8
0
k
m
/
h
and in rest half time its speed becomes
4
0
k
m
/
h
, the average speed of car will be:
Medium
View solution
>
A car travels half of the distance with constant velocity 40 km/h and another half with a constant velocity of 60 km/h along a straight line. The average velocity of the car is
Medium
View solution
>
More From Chapter
Motion in a Straight Line
View chapter
>
Revise with Concepts
Average Speed and Average Velocity
Example
Definitions
Formulaes
>
Instantaneous Velocity and Instantaneous Speed
Example
Definitions
Formulaes
>
Velocity - Time Graph
Example
Definitions
Formulaes
>
Learn with Videos
Speed and Average Speed
5 mins
Velocity and Average Velocity
3 mins
Problem on Average Velocity
5 mins
Instantaneous speed, velocity, and acceleration
11 mins
Velocity - Time Graph - I
10 mins
Velocity - Time Graph - II
11 mins
Problems on Speed-Velocity -Time graph
7 mins
Practice more questions
Easy Questions
69 Qs
>
Medium Questions
606 Qs
>
Hard Questions
321 Qs
>
Shortcuts & Tips
Problem solving tips
>
Mindmap
>
Common Misconceptions
>
Memorization tricks
>
Important Diagrams
>
Cheatsheets
>