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Byju's Answer
Standard XII
Physics
Moment of Inertia of a Rod
A body A is...
Question
A body
A
is dropped from the top of a cliff
42
m
high and at the same time, another body
B
is thrown vertically upwards from the ground with a velocity of
21
m
/
s
. When and where will they meet?
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Solution
x
=
u
t
+
1
2
a
t
2
x
=
1
2
×
g
t
2
.
.
.
.
.
.
(
1
)
u
2
−
x
=
21
t
−
1
2
×
g
t
2
.
.
.
.
.
.
(
2
)
u
2
−
1
2
×
g
t
2
=
21
t
−
1
2
×
g
t
2
t
=
2
sec
x
=
1
2
×
g
×
4
=
2
×
9.81
=
18.62
(
f
r
o
m
t
o
p
)
42
−
18.62
=
21.38
(
f
o
r
b
o
t
t
o
m
)
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