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Byju's Answer
Standard VII
Physics
Deceleration/Retardation
A bus decreas...
Question
A bus decreases from 80 km/h to 60 km/h in 5 seconds. Find the acceleration of the bus?
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Solution
Dear Student,
u
=
80
km
/
h
=
80
×
5
18
m
/
s
u
=
22
.
22
m
/
s
v
=
60
km
/
h
=
60
×
5
18
m
/
s
=
16
.
67
m
/
s
t
=
5
s
a
=
v
-
u
t
a
=
16
.
67
-
22
.
22
5
=
-
1
.
11
m
/
s
2
Here
negative
sign
shows
the
retardation
of
the
bus
.
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I have a doubt in thid questions why are multiplying with
80×5/18 and in velocity we are writing 60×5/18 why we are writing 5 /18 for this
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