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Byju's Answer
Standard VII
Physics
Average Speed
If the speed ...
Question
If the speed of a car is
20
m
s
−
1
, what is the speed in
k
m
h
−
1
?
72
Open in App
Solution
The correct option is
A
72
Given:
Speed of a car
=
20
m
s
−
1
=
20
m
1
s
[
1
m
=
1
1000
k
m
,
1
s
=
1
3600
h
]
⇒
20
×
1
1000
k
m
1
×
1
60
×
60
h
⇒
20
×
3600
1000
k
m
h
−
1
⇒
72
k
m
h
−
1
Suggest Corrections
0
Similar questions
Q.
If the speed of a car is
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Q.
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Q.
A police van moving on a highway with a speed of
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−
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Q.
The speeds of cars passing a 20 km/h speed limit sign are recorded in the following table.
Speeds of Cars (km/h)
32
41
89
12
16
20
15
28
50
25
30
48
31
25
53
61
What is the median speed of these cars?
Q.
A police van moving on a highway with a speed of 30 km
h
−
1
fires a bullet at a thief's car speeding away in the same direction with a speed of 192 km
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r
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1
, with what speed does the bullet hits the car ?
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