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MediumPhysicsconservation of momentum
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In a ballistics demonstration, a police officer fires a bullet of mass 50 gm with speed 200 m/s. The bullet emerges with only 10% of its initial kinetic energy. The emergent speed of the bullet is:
A
0 m/s
B
53.2 m/s
C
63.2 m/s
D
6.32 m/s
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