Quiz: Newton's Laws Of Motion And Fbds

20 Questions  I  By Songj2 on October 3, 2009
Sample quiz for Newton's laws of motion and free-body diagrams.

  
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1.  When analyzing dynamics problems, free-body diagrams
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2.  A force of 12 N acting in a direction [30ºE of S] is equivalent to which of the following pairs of forces acting simultaneously?
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3.  A hockey puck slides along an ice surface shortly after it has left the hockey stick that propelled it. Which of the following free-body diagrams best represents the hockey puck?
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4.  Study the free-body diagram below and choose the statement that best describes the object's motion.
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5.  Study the free-body diagram below and determine what additional force(s) would be required for the object to achieve uniform motion.
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6.  The free-body diagram below illustrates the forces acting on a 2.0-kg object as it is being pushed along a horizontal surface. What is the motion of the object?
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7.  The free-body diagram of a 4.0-kg object is shown below. What additional force must act so that the object has an acceleration of 2.5 m/s2 [W]?
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8.  Two identical arrows, A and B, are fired with different bows. The bow that fires arrow A exerts twice the average force as the bow that fires arrow B. Compare the accelerations of the two arrows.
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9.  A hockey puck of mass 150 g is sliding south along the ice and slows at a rate of 1.2 m/s2. What is the net force acting on the puck?
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10.  Newton's third law essentially states
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11.  Which of the following observations would be adequately explained by Newton's third law?
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12.  If the force of gravity that the earth exerts on you is considered to be the action force then, according to Newton's third law, the corresponding reaction force would be the
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13.  An object is pushed horizontally at a constant velocity. What can correctly be said about the forces acting on the object?
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14.  Which of the following units is equivalent to a newton (N)?
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15.  A 4.0-kg object, A, and a 2.0-kg object, B, are connected with a rope. A force is applied to another rope attached to the 2.0-kg object that pulls both A and B along a horizontal surface. Which of the following statements is true?
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16.  Three masses are suspended vertically as shown in the diagram below. The system is accelerating upward. What is the relationship among the forces of tension?
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17.  The physical quantity, which is the measure of inertia, is
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18.  Which law is in control of a spaceship which cruises through space at constant speed without using any fuel?
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19.  An object is hanging by two strings, A and B, anchored to the ceiling as in the diagram below.  Each string holds the object in place with a force of 40 N at 30 degrees to the vertical.  Determine the force of gravity required to keep the object motionless.
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20.  Describe the motion of the 2.0 kg mass below in the horizontal plane.
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