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| 1 | |
Resolve the vector 4.62 m/s2 [W18.60S] into its components. |
| | A) | 4.38m/s2 [S] and 1.47 m/s2[W] |
| | B) | 4.62m/s2 [S] and 4.62 m/s2[W] |
| | C) | 3.27m/s2 [S] and 3.27 m/s2[W] |
| | D) | 4.38m/s2 [W] and 1.47 m/s2[S] |
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| 2 | |
The pilot of a light airplane wishes to fly to an airport 648 km due north, and arrive in 6.00 h. If a wind is blowing at 62.0 km/h[S50.00what heading and airspeed would allow the pilot to complete the journey successfully? |
| | A) | 108 km/h [N] |
| | B) | 155 km/h[N17.80E] |
| | C) | 186 km/h[N190W] |
| | D) | 155 km/h [N17.80W] |
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| 3 | |
What is the equilibrating force of the combination of 162 N[N23.00W] and 87.0 N[N72.00E]? |
| | A) | 177 N[S6.290W] |
| | B) | 176 N [S83.70W] |
| | C) | 249 N[S6.290W] |
| | D) | 249 N[N6.290E] |
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| 4 | |
An elevator is accelerating downwards at 0.860 m/s2. If the mass of the elevator and all occupants is 3466kg, what is the tension in the cable supporting the elevator? |
| | A) | 3.40 x 104N |
| | B) | 2.98 x 103 N |
| | C) | 3.66 x 104 N |
| | D) | 3.10 x 104 N |
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| 5 | |
The diagram shows three masses connected by cords over a pulley. <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070922802/536439/pei_physics_Ch10_quiz3_question5.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (40.0K)</a>]]>.If m1 and m2 are both 3.6 kg, and m3 is 1.8 kg, what is the tension in the cord joining m2 and m3? |
| | A) | 21.2 N |
| | B) | 14.1 N |
| | C) | zero |
| | D) | 13.7 N |
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| 6 | |
A 162 g ball rolling across a smooth surface at 2.58 m/s[E] meets head-on, in an elastic collision, another ball of mass 268 g, initially at rest. What are the two velocities after the collision? |
| | A) | 0.636 m/s[E] and 1.94 m/s[E] |
| | B) | 0.636 m/s[W] and 1.94 m/s[E] |
| | C) | Zero and 2.58 m/s[E] |
| | D) | 2.58 m/s[W] and 2.58 m/s[E] |
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| 7 | |
Which one of the following statements is correct. |
| | A) | Total energy is conserved in all collisions |
| | B) | Only potential energy is conserved in an elastic collision |
| | C) | Kinetic energy is always conserved. |
| | D) | Total energy is only conserved in an elastic collision |
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| 8 | |
The diagram shows a light fixture hanging from a uniform 4.80 kg horizontal that is 2.20 m long. The beam is supported by a cable making an angle of 28.00 with the beam. If the tension in the cable is 426 N, what is the mass of the light fixture. |
| | A) | 25.4 kg |
| | B) | 16.0 kg |
| | C) | 18.0 kg |
| | D) | 15.6 kg |
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| 9 | |
A 0.484 kg block of wood slides across a rough floor and just before striking a 2.56 kg block is travelling at 2.94 m/s. If the blocks become coupled together on contact, and the coefficient of friction between the blocks and the floor is 0.18, how far will they slide before coming to rest? |
| | A) | 2.8 cm |
| | B) | 4.67 cm |
| | C) | 6.2 cm |
| | D) | 8.7 cm |
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| 10 | |
A 14 g bullet is shot into a ballistic pendulum that has a mass of 2.47 kg. If the bullet is traveling horizontally at 446 m/s just before it enters the pendulum bob, to what height will the pendulum rise above its rest position? |
| | A) | 0.19 m |
| | B) | 0.32 m |
| | C) | 0.26 m |
| | D) | 0.39 m |
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