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JEE Main2005PhysicsWork, Power and EnergyActual

A bullet fired into a fixed target loses half of its velocity after penetrating 3 ~cm . How much further it will penetrate before coming to rest assuming that it faces constant resistance to motion?

Options

  1. A3.0 ~cm
  2. B2.0 ~cm
  3. C1.5 ~cm
  4. D1.0 ~cm

Correct answer

D. 1.0 ~cm

Step-by-step solution

F .3= 1 2 m v^2- 1 2 m v^2 4 F(3+x)= 1 2 m v^2x=1 ~cm

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