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Physics
A bullet hits and gets embedded in a solid block of wood resting on a horizontal frictionless table. What is conserved?
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Q. A bullet hits and gets embedded in a solid block of wood resting on a horizontal frictionless table. What is conserved?
JIPMER
JIPMER 2010
Work, Energy and Power
A
Momentum and kinetic energy
32%
B
Momentum only
48%
C
Kinetic energy only
7%
D
Neither momentum nor kinetic energy
12%
Solution:
Since bullet comes to rest with respect to the solid block, the collision is inelastic in nature. Therefore the only momentum is conserved and kinetic energy is not conserved.