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Byju's Answer
Standard IX
Physics
Acceleration
The accelerat...
Question
The acceleration of a particles in
m
s
−
2
is given by
a
=
3
t
2
+
2
t
+
2
, where time
t
is in second. If the particle starts with a velocity
v
=
2
m
s
−
1
at
t
=
0
, then find the velocity at the end of
2
s
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Solution
a
=
3
t
2
+
2
t
+
2
v
=
∫
t
0
a
d
t
+
c
v
(
t
)
=
[
t
3
+
t
2
+
2
t
]
t
0
+
c
v
(
t
)
=
t
3
+
t
2
+
2
t
+
2
[
c
=
2
m
/
s
a
t
t
=
0
]
v
(
2
)
=
8
+
4
+
4
+
2
=
18
m
/
s
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3
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