Which has more kinetic energy: a 0.0016-kg bullet traveling at 398 m/s or a 5.9 107-kg ocean liner traveling at 14 m/s (27 knots)?

Answer 1

The ocean liner wins due to its much greater mass.

Bullet: KE = 1/2 m v² = 1/2 (0.0016 kg) (398 m/s)² = 130 J.

Ship: KE = 1/2 (5.9 x 10⁷ kg) (14 m/s)² = 5.8 x 10⁹ J.