Question Detail
Question
A 2.8 g bullet traveling at 540 m/s enters a wall and exits with a speed of 320 m/s. What is the amount of energy transferred?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Mass = 0.0028 kg. Energy lost = ½m(v₁² − v₂²) = 0.5×0.0028(540² − 320²) = 0.0014(291600 − 102400) ≈ 265 J.
Hint
Use change in kinetic energy.