wikiHow Calculating Kinetic Energy Practice Answers 1. Kinetic energy = (1/2) x 1500 kg x (30 m/s)^2 = 675,000 J 2. Kinetic energy = (1/2) x 0.05 kg x (20 m/s)^2 = 10 J 3. Kinetic energy = (1/2) x 0.01 kg x (500 m/s)^2 = 1,250 J 4. Kinetic energy = (1/2) x 20,000 kg x (300 m/s)^2 = 2,700,000,000 J 5. Kinetic energy = (1/2) x 10,000 kg x (20 m/s)^2 = 2,000,000 J 6. Kinetic energy = (1/2) x 0.145 kg x (40 m/s)^2 = 116 J 7. Kinetic energy = (1/2) x 100,000 kg x (2000 m/s)^2 = 2,000,000,000,000 J 8. Kinetic energy = (1/2) x 50,000 kg x (50 m/s)^2 = 31,250,000 J 9. Kinetic energy = (1/2) x 70 kg x (8 m/s)^2 = 2,240 J 10. Kinetic energy = (1/2) x 200 kg x (100 m/s)^2 = 1,000,000 J 11. Kinetic energy = (1/2) x 1,000 kg x (10,000 m/s)^2 = 5,000,000,000,000 J 12. Kinetic energy = (1/2) x 500 kg x (30 m/s)^2 = 225,000 J 13. Kinetic energy = (1/2) x 100,000 kg x (100 m/s)^2 = 5,000,000,000 J 14. Kinetic energy = (1/2) x 10,000 kg x (200 m/s)^2 = 400,000,000 J 15. Kinetic energy = (1/2) x 0.2 kg x (5 m/s)^2 = 2.5 J 16. Kinetic energy = (1/2) x 2,000 kg x (10 m/s)^2 = 100,000 J 17. Kinetic energy = (1/2) x 0.005 kg x (1,000 m/s)^2 = 2,500 J 18. Kinetic energy = (1/2) x 1,000 kg x (5,000 m/s)^2 = 6,250,000,000 J 19. Kinetic energy = (1/2) x 200,000 kg x (50 m/s)^2 = 250,000,000 J 20. Kinetic energy = (1/2) x 0.1 kg x (5 m/s)^2 = 1.25 J Page