dont need to show work

33. Objects can have kinetic energy, potential energy, or both. Energy can be in the form of motion. Energy can also be stored by objects in various ways, including position, chemical bonds, or physical state. What type of energy is found in a rubber band?

A. kinetic energy B. gravitational potential energy C. elastic potential energy D. electrical energy

34. Which of the following can never be negative?

A. kinetic energy B. gravitational potential energy C. work D. displacement

35. A guy throws a bowling ball along a bowling alley. As it travels toward the pins, the ball has which of the following kinetic energies?

A. translational kinetic energy only B. rotational kinetic energy only C. both translational and rotational kinetic energy D. neither translational and rotational kinetic energy

36. An object that has momentum must have

A. acceleration. B. a force applied to maintain it. C. potential energy. D. kinetic energy.

37. The gravitational potential energy of an object depends on the object's weight and that object's __________ from the reference level.

A. density B. size C. height D. speed

38. Which has greater kinetic energy, a car traveling at 45 km/h or a half-asmassive car traveling at 90 km/h?

A. The 90 km/h car has greater kinetic energy. B. Both have the same kinetic energy. C. The 45 km/h car has greater kinetic energy.

39. An industrial container holds 100 N of water. The area of the inside bottom of the container is 2 square meters. What pressure does the water exert on the bottom of the container?

A. 0.02 N per square meter B. 50 N per square meter C. 100 N per square meter D. 400 N per square meter

40. Many objects such as bridges and train tracks are specifically designed to allow extra space for

A. specific heat. B. thermal energy. C. thermal expansion. D. conductors.

41. If Nellie Newton pushes an object with twice the force for twice the distance, she does

A. twice the work. B. the same work. C. four times the work. D. eight times the work.

42. Water molecules attract other types of molecules. Attraction between different types of molecules is referred to as

A. adhesion. B. cohesion. C. capillary action. D. surface tension.

43. Which of the following is NOT an amorphous solid?

A. coal B. glass C. rubber D. diamond

44. A measure of the average kinetic energy of the individual particles is called

A. thermal energy. B. convection current. C. temperature. D. heat.

45. A person on a roof throws one ball downward and an identical ball upward at the same speed. The ball thrown downward hits the ground with 140 J of kinetic energy. Ignoring air resistance/friction, with how much kinetic energy does the second ball hit the ground after going up and then coming back down?

A. less than 140 J B. 140 J C. 280 J D. more than 280 J

46. A car is traveling at 100 km/s and skids four times as far as the same car at a different speed. What is that different speed of the car?

A. 80 km/s B. 9.8 km/s C. 50 km/s D. 25 km/s

47. Entropy may decrease locally at some region within the isolated system. How can this statement be justified?

A. It must be compensated by a greater increase of entropy somewhere within the system. B. This is possible because entropy of an isolated system can decrease. C. This cannot be possible. D. none of the above

48. In a hydraulic press operation, it is possible for the

A. output force and output displacement to increase. B. output displacement to exceed the input displacement when both forces are equal. C. energy output to exceed the energy input. D. force output to exceed the force input.

49. Water molecules attract each other. Attraction between similar molecules is referred to as

A. cohesion. B. adhesion. C. capillary action. D. surface tension.

50. Archimedes' principle says that an object is buoyed up by a force that is equal to

A. the weight of the fluid displaced. B. the mass of the fluid displaced. C. the volume of the fluid displaced. D. the mass of the object.