Question

(c) 10.383 m/s (d)11.810 m/s 19. What is the gravitational potential energy of a book of mass 4.00 kg if it is held at a height of 5.50 m above the floor? (Take zero potential energy to be at the floor.) (a) 22.0J (b) 405.1 J (c) 314.2 (d) 215.6J 20. Which of the following is, in general, not a conserved quantity? (a) Linear momentum (b) Angular momentunm (c) Total energy (d) Kinetic energy 21. A bullet of mass 35.0 g is shot into a stationary wooden block of mass 1300 g. After the bullet hits th block, it becomes embedded in the block, and two move together with a speed of 170.00 cm/s, wh was the initial speed of the bullet? (a) 4110 cm/s (b) 6484 cm/s (c) 3300 cm/s (d) 2940 cm/s 22. Three point masses lie along the x-axis. If a mass of 4.00 kg is located at x 1.90 m, a secon of6.00 kg is located at x = 5.10 m, and a third mass of 3.00 kg is located at x-5.8 m, then w the center of mass? (a) x 3.15 m (b)x-4.28 m (c) x = 0.00 m (d)x-2.50 m

Answer 1