# Unit 2 Study Guide for Exam sps8 27 Oct 11 True/False

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 A B C D

PTS: 1 DIF: Bloom’s Level 2 REF: Page 44

OBJ: 2.4.2 Differentiate between speed and velocity. NAT: B.4

STA: sps8a TOP: Differentiate between speed and velocity.

KEY: Average speed MSC: 2

NOT: /a/ Speed is multiplied with time to calculate the distance. All the quantities should have units of the same system. /b/ Time must be converted to seconds. /c/ Time should be multiplied with speed, not divided, to calculate the distance. /d/ Correct!

35. ANS: D

1500m/80s = 18.75m/s

 Feedback A B C D

PTS: 1 DIF: Bloom’s Level 2 REF: Page 44

OBJ: 2.4.2 Differentiate between speed and velocity. NAT: B.4

STA: sps8a TOP: Differentiate between speed and velocity.

KEY: Average speed MSC: 2

NOT: /a/ Speed is multiplied with time to calculate the distance. All the quantities should have units of the same system. /b/ Time must be converted to seconds. /c/ Time should be multiplied with speed, not divided, to calculate the distance. /d/ Correct!

36. ANS: B

80-48= 32/20 = 1.6

PTS: 1 STA: sps8a
37. ANS: A

v/a = t

5m/s (s2/3.7m) = 1.35 s

PTS: 1 STA: sps8a

38. ANS: C PTS: 1 STA: sps8b TOP: inertia
39. ANS: A PTS: 1 STA: sps8c
40. ANS: D PTS: 1 STA: sps8a
41. ANS: A PTS: 1 STA: sps8a
42. ANS: C PTS: 1 STA: sps8a
43. ANS: D PTS: 1 STA: sps8a
44. ANS: D PTS: 1 STA: sps8a
45. ANS: A PTS: 1 STA: sps8a
46. ANS: B PTS: 1 STA: sps8a
47. ANS: C PTS: 1 STA: sps8a
48. ANS: D PTS: 1 STA: sps8a
49. ANS: B PTS: 1 STA: sps8b
50. ANS: A PTS: 1 STA: sps8b
51. ANS: D PTS: 1 STA: sps8b
52. ANS: D PTS: 1 STA: sps8b
53. ANS: C PTS: 1 STA: sps8b
54. ANS: C PTS: 1 STA: sps8c
55. ANS: D PTS: 1 STA: sps8c
56. ANS: C PTS: 1 STA: sps8d
57. ANS: D PTS: 1 STA: sps8d
58. ANS: A PTS: 1 STA: sps8c
59. ANS: D PTS: 1 STA: sps8e
60. ANS: A PTS: 1 STA: sps8e
61. ANS: B

d=v*t = 12mil/s * 60s = 720 mil

PTS: 1 STA: sps8a TOP: calculate distance
62. ANS: B

1050mil/2h = 525mil/h

PTS: 1 STA: sps8a TOP: calculate velocity
63. ANS: D

240 feet/ 120s = 2 ft/s

PTS: 1 STA: sps8a TOP: calculate velocity
64. ANS: A

5mil/h * 280h = 1400 mil

PTS: 1 STA: sps8a TOP: calculate distance
65. ANS: A PTS: 1 STA: sps8a TOP: calculate velocity
66. ANS: D PTS: 1 STA: sps8a TOP: calculate velocity
67. ANS: B PTS: 1 STA: sps8d
68. ANS: D PTS: 1 STA: sps8d
69. ANS: A PTS: 1 STA: sps8e
MULTIPLE RESPONSE
70. ANS: C PTS: 1 STA: sps8e
71. ANS:

62.4g

PTS: 1 STA: scsh5
PROBLEM
72. ANS:

147N

PTS: 1 STA: sps8d
73. ANS:

4500cm (h/1500cm) = 3 h

PTS: 1 STA: sps8a
74. ANS:

25m/s / 25s = 1m/s2

PTS: 1 STA: sps8a
75. ANS:

7km/35min = 0.2 km/min

PTS: 1 STA: sps8a
76. ANS:

t=d/t = 300km / 55km/hr =5.5 h

PTS: 1 STA: sps8a
77. ANS:

d=st = 1400km/h * 7h = 9800 km

PTS: 1 STA: sps8a
78. ANS:

v = d/t = 27mil/1.08h = 25 mil/h

PTS: 1 STA: sps8a MSC: ver A
79. ANS:

3.2 mil/0.08 h = 40 mil/h

PTS: 1 STA: sps8a MSC: ver A
80. ANS:

a = dv/dt = 9.4m/s / 10.603s = 0.9 m/s2

PTS: 1 STA: sps8a MSC: ver A
81. ANS:

a = dv/dt = 8.95m/s / 22.336s = 0.4 m/s2

PTS: 1 STA: sps8a MSC: ver B
82. ANS:

103 kg ( 9.8m/s2) = 1009.4N

PTS: 1 STA: sps8d MSC: ver B
83. ANS:

F = ma = 14,000kg * 4.5m/s2 = 63 000N

PTS: 1 STA: sps8b MSC: ver A