Question Detail
Question
A 2.8 g bullet travelling at 540 m/s enters a wall and exits at 120 m/s. How much kinetic energy is transferred to the wall?
Correct Answer
Option C is the correct answer.
Detailed Explanation
m = 0.0028 kg. Energy loss = ½m(v₁² − v₂²) = 0.5×0.0028×(540² − 120²) ≈ 388 J.
Hint
Energy transferred equals loss in kinetic energy.