When a bullet is fired at a target, its velocity decreases by half after penetrating into it. The additional thickness it will penetrate before coming to rest is
Step 1. Given data:
Initial velocity =
Final velocity after penetration =
Displacement =
Step 2. Formula used:
Taking the equation of motion into account, , where is the final velocity, is the initial velocity, is the acceleration and is the displacement.
Step 3. Calculation:
Therefore,
Here,
Allow the bullet to penetrate before coming to a stop, as a result
Hence, option (C) is correct.