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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
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
**SHORT ANSWER**
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
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