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Test Index
Class 11 NEET Physics Motion in a Straight Line Questions
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© examsnet.com
Question : 5
Total: 58
PHYSICS
Section-B
A bullet from a gun is fired on a rectangular wooden block with velocity
u
. When bullet travels
24
cm
through the block along its length horizontally, velocity of bullet becomes
u
3
. Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is
[NEET 2023]
24
cm
28
cm
30
cm
27
cm
Validate
Solution:
👈: Video Solution
between 1 to 2
(
u
3
)
2
=
u
2
−
2
a
×
24
⇒
2
a
(
24
)
=
8
u
2
9
⋅
⋅
⋅
⋅
⋅
⋅
⋅
(
i
)
between
2
to
3
0
=
(
u
3
)
2
−
2
a
⋅⋅⋅⋅⋅⋅(ii)
From equation (I) and (II)
2as
=
2
a
(
24
)
8
s
=
3
cm
Length of wooden block is
24
+
3
=
27
cm
© examsnet.com
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