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# Chapter 1 The Science of Physics

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1. Chapter 1The Science of Physics

2. Which of the following is an area of physics that studies motion and its causes?a. thermodynamics b. mechanics c. quantum mechanics d. optics

3. Which of the following is an area of physics that studies motion and its causes?a. thermodynamics b. mechanicsc. quantum mechanics d. optics

4. The symbols for units of length in order from smallest to largest are:a. m, cm, mm, and km. b. mm, m, cm, and km. c. km, mm, cm, and m. d. mm, cm, m, and km.

5. The symbols for units of length in order from smallest to largest are:a. m, cm, mm, and km. b. mm, m, cm, and km. c. km, mm, cm, and m. d. mm, cm, m, and km.

6. The SI base unit used to measure mass is the:a. meter b. second c. kilogram d. liter

7. The SI base unit used to measure mass is the:a. meter b. second c. kilogramd. liter

8. If some measurements agree closely with each other but differ widely from the actual value, these measurements are:a. neither precise nor accurateb. accurate but not precisec. acceptable as a new standard of accuracy d. precise but not accurate

9. If some measurements agree closely with each other but differ widely from the actual value, these measurements are:a. neither precise nor accurateb. accurate but not precisec. acceptable as a new standard of accuracy d. precise but not accurate

10. What are the basic SI units?a. meters, kilograms, hoursb. feet, pounds, secondsc. meters, kilograms, secondsd. feet, kilograms, seconds

11. What are the basic SI units?a. meters, kilograms, hoursb. feet, pounds, secondsc. meters, kilograms, secondsd. feet, kilograms, seconds

12. Ch 2 Motion in One Dimension

13. What is the speed of an object at rest?a. 0.0 m/s b. 1.0 m/s c. 9.9 m/s d. 9.81 m/s

14. What is the speed of an object at rest?a. 0.0 m/s b. 1.0 m/s c. 9.9 m/s d. 9.81 m/s

15. A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h?a. 1.1 km b. 2.5 km c. 0.63 km d. 3.7 km

16. A dolphin swims 1.85 km/h. How far has the dolphin traveled after 0.60 h?a. 1.1 km b. 2.5 km c. 0.63 km d. 3.7 km

17. Acceleration is:a. displacement b. the rate of change of displacementc. velocity d. the rate of change of velocity

18. Acceleration is:a. displacement b. the rate of change of displacementc. velocity d. the rate of change of velocity

19. Which of the following units are used to measure free fall?a. m/s b. m/s2c. m•s d. m2/s2

20. Which of the following units are used to measure free fall?a. m/s b. m/s2c. m•s d. m2/s2

21. When there is no air resistance, objects of different masses:a. fall with equal accelerations with similar displacements.b. fall with different accelerations with different displacements.c. fall with equal accelerations with different displacements.d. fall with different accelerations with similar displacements.

22. When there is no air resistance, objects of different masses:a. fall with equal accelerations with similar displacements.b. fall with different accelerations with different displacements.c. fall with equal accelerations with different displacements.d. fall with different accelerations with similar displacements.

23. Ch 3Two-Dimensional Motion and Vectors

24. Which of the following is a physical quantity that has both magnitude and direction?a. vector b. scalar c. resultant d. frame of reference

25. Which of the following is a physical quantity that has both magnitude and direction?a. vectorb. scalar c. resultant d. frame of reference

26. A string attached to an airborne kite was maintained at an angle of 40.0° with the ground. If 120 m of string was reeled in to return the kite back to the ground, what was the horizontal displacement of the kite?a. 110 m b. 84 m c. 77 m d. 92 m

27. A string attached to an airborne kite was maintained at an angle of 40.0° with the ground. If 120 m of string was reeled in to return the kite back to the ground, what was the horizontal displacement of the kite?a. 110 m b. 84 m c. 77 m d. 92 m

28. Which of the following is the motion of objects moving in two dimensions under the influence of gravity?a. horizontal velocity b. directrix c. parabola d. projectile motion

29. Which of the following is the motion of objects moving in two dimensions under the influence of gravity?a. horizontal velocity b. directrix c. parabola d. projectile motion

30. What is the path of a projectile?a. a wavy line 2. a parabola 3. a hyperbola 4. Projectiles do not follow a predictable path.

31. What is the path of a projectile?a. a wavy line 2. a parabola3. a hyperbola 4. Projectiles do not follow a predictable path.

32. A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher’s perspective, the chalk appears to fall:a. straight down b. straight down and backward c. straight down and forward d. straight backward

33. A piece of chalk is dropped by a teacher walking at a speed of 1.5 m/s. From the teacher’s perspective, the chalk appears to fall:a. straight downb. straight down and backward c. straight down and forward d. straight backward

34. Ch 4Force and the Laws of Motion

35. What causes a moving object to change direction?a. acceleration b. velocity c. inertia d. force

36. What causes a moving object to change direction?a. acceleration b. velocity c. inertia d. force

37. Which of the following is the tendency of an object to maintain its state of motion?a. acceleration b. inertia c. force d. velocity

38. Which of the following is the tendency of an object to maintain its state of motion?a. acceleration b. inertia c. force d. velocity

39. A wagon with a weight of 300.0 N is accelerated across a level surface at 0.5 m/s2. What net force acts on the wagon?a. 9.0 N b. 15 N c. 150 N d. 610 N

40. A wagon with a weight of 300.0 N is accelerated across a level surface at 0.5 m/s2. What net force acts on the wagon?a. 9.0 N b. 15 Nc. 150 N d. 610 N

41. The statement by Newton that for every action there is an equal and opposite reaction is which of his laws of motion?a. first b. second c. third d. fourth

42. The statement by Newton that for every action there is an equal and opposite reaction is which of his laws of motion?a. first b. second c. third d. fourth

43. The magnitude of the force of gravity acting on an object is:a. frictional force b. weight c. inertia d. mass

44. The magnitude of the force of gravity acting on an object is:a. frictional force b. weightc. inertia d. mass

45. Ch 5Work and Energy

46. Work is done when:a. the displacement is not zerob. the displacement is zeroc. the force is zero d. the force and displacement are perpendicular

47. Work is done when:a. the displacement is not zerob. the displacement is zeroc. the force is zero d. the force and displacement are perpendicular

48. Which of the following energy forms is the sum of kinetic energy and all forms of potential energy?a. total energy b. sum energy c. nonmechanical energy d. mechanical energy

49. Which of the following energy forms is the sum of kinetic energy and all forms of potential energy?a. total energy b. sum energy c. nonmechanical energy d. mechanical energy

50. An 80.0 kg climber with a 20.0 kg pack climbs 8848 m to the top of Mount Everest. What is the climber’s potential energy?a. 6.94 x 106 J b. 4.16 x 106 J c. 2.47 x 106 J d. 1.00 x 106 J