|
| 1 | The kilogram is the metric unit of weight. |
 | A) | True |
| B) | False |
|
| 2 | The mass of an object on the moon is the same as its mass on earth. |
| A) | True |
| B) | False |
|
| 3 | The British unit for mass is the slug. |
| A) | True |
| B) | False |
|
| 4 | Newton’s second law of motion is strictly true only in the absence of friction forces. |
| A) | True |
| B) | False |
|
| 5 | The mass of a body is dependent on the acceleration due to gravity. |
| A) | True |
| B) | False |
|
| 6 | The acceleration an object receives is proportional to the applied force, the constant of proportionality being the reciprocal of its mass. |
| A) | True |
| B) | False |
|
| 7 | The weight of an object is equal to the product of its mass and the gravitational acceleration. |
| A) | True |
| B) | False |
|
| 8 | Newton’s second law of motion applies either to a system of bodies moved together as a whole or to any body that is a part of such a system. |
| A) | True |
| B) | False |
|
| 9 | The weight of a body whose mass is 1 slug is equal to approximately 32 lb. |
| A) | True |
| B) | False |
|
| 10 | The weight of a 9.8-kg body is 1 N. |
| A) | True |
| B) | False |
|
| 11 | The mass of an 80-lb sled is |
| A) | 5 slugs |
| B) | 2.5 slugs |
| C) | 2.5 kg |
| D) | 256 slugs |
|
| 12 | The weight of a 10-kg block is |
| A) | 98 N |
| B) | 9.8 N |
| C) | 10 N |
| D) | 0.98 N |
|
| 13 | What acceleration will a force of 40 N impart to a mass of 5 kg? |
| A) | 8 m/s |
| B) | 200 m/s² |
| C) | 8 m/s² |
| D) | 8 cm/s² |
|
| 14 | What resultant force will give a 64-lb object an acceleration of 6 ft/s²? |
| A) | 384 lb |
| B) | 10.7 lb |
| C) | 12 slugs |
| D) | 12 lb |
|
| 15 | When a 1-N force acts on a 1-kg body, the body receives |
| A) | an acceleration of 9.8 m/s² |
| B) | a speed of 1 m/s |
| C) | an acceleration of 980 m/s² |
| D) | an acceleration of 1 m/s² |
|
| 16 | A force of 20 N gives an object an acceleration of 5 m/s². What force will give the same object an acceleration of 16 m/s²? |
| A) | 64 N |
| B) | 32 N |
| C) | 4 N |
| D) | 256 N |
|
| 17 | A 10-kg mass is suspended by a rope. What is the acceleration if the tension in the rope is 118 N while the mass is in motion? |
| A) | 4 ms/² |
| B) | 2 m/s² |
| C) | 11.8 m/s² |
| D) | 20 m/s² |
|
| 18 | A 65-lb body is suspended by a rope and accelerated upward with an acceleration of 8 ft/s². The tension in the rope is approximately |
| A) | 96 lb |
| B) | 16 lb |
| C) | 81 lb |
| D) | 48 lb |
|
| 19 | The mass m in Fig. 7-2 required to give the system an acceleration of 6 m/s² is approximately
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0077158733/294233/figure72.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"> (16.0K)</a>]]> |
| A) | 31.0 kg |
| B) | 31.6 kg |
| C) | 32.6 kg |
| D) | 41.9 kg |
|
| 20 | A 30-kg girl steps to shore from a 60-kg boat, giving the boat an acceleration of 2 m/s². If water resistance is neglected, the girl receives an acceleration of |
| A) | -4 ms/² |
| B) | -15 m/s² |
| C) | -1 m/s² |
| D) | -8 m/s² |
|
| 21 | The acceleration an object receives is directly proportional to the and inversely proportional to the . |
|
| 22 | The mass of a particle is equal to divided by the . |
|
| 23 | In USCS units, the mass unit, called a , is derived from the chosen unit of for force. |
|
| 24 | In the SI system, the mass unit is the , and the derived unit is the . |
|
| 25 | Weight has the same units as the units of . |
|
| 26 | In USCS units, the mass of an object is found by dividing its by . |
|
| 27 | In the metric system, objects are usually described by giving their . In the USCS, objects are described by giving their . |
|
| 28 | is the force of gravitational attraction and is quite dependent
on the . |
|
| 29 | If the force is held constant, an increase in produces a proportionate in acceleration. |
|
| 30 | If the unit of mass is the kilogram, the unit of force will be the and the unit for acceleration will be . |