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
- A3.0 ~cm
- B2.0 ~cm
- C1.5 ~cm
- 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