Section 2.2 Where and When?

Practice Test
      
  1.The vertical direction in a coordinate system is called the __________.  
  a.   x-axis  
  b.   intercept  
  c.   scale  
  d.   y-axis  
  Hint    
      
  2.To calculate the distance traveled continuously in a straight line, __________.  
  a.   subtract final position from starting position  
  b.   subtract the cosine of the angle between the starting and finishing positions from the square of the distance traveled  
  c.   divide the change in velocity by the time over which the change occurs  
  d.   divide the distance traveled by the time needed to travel the distance  
  Hint    
      
  3.A quantity that tells you only the magnitude is called a __________ quantity.  
  a.   interval  
  b.   scalar  
  c.   displacement  
  d.   vector  
  Hint    
      
  4.Which of the following is a scalar quantity?  
  a.   150 km  
  b.   displacement  
  c.   velocity  
  d.   150 km southwest  
  Hint    
      
  5.A common symbol for the time interval is __________.  
  a.   Δt  
  b.   tf  
  c.   Δv  
  d.   ti  
  Hint    
      
  6.Displacement has both magnitude and __________.  
  a.   distance  
  b.   size  
  c.   temperature  
  d.   direction  
  Hint    
      
  7.In Figure 2-8, If the store were on the other side of your aunt's house, what would be your total distance traveled if you went from your house to the store to your aunt's?  
  a.   1.1 km  
  b.   0.9 km  
  c.   0.5 km  
  d.   0.7 cm  
  Hint    
      
  8.The distance and direction between the final position and the starting position is the __________ .  
  a.   acceleration  
  b.   differential  
  c.   velocity  
  d.   displacement  
  Hint    
      
  9.Displacement is a change in __________.  
  a.   velocity  
  b.   position  
  c.   distance  
  d.   speed  
  Hint    
      
  10.How could you locate the position of a sprinter at a particular moment on a motion diagram?  
  a.   Use a position scalar.  
  b.   Determine the magnitude of the motion.  
  c.   Draw an arrow from the origin to the belt of the sprinter.  
  d.   Calculate the difference in apparent height of the runner between the origin and final position.  
  Hint    
      
  11.To subtract two vectors, __________.  
  a.   use the equation R2 = A2 - B2  
  b.   subtract 180° from θ, then use the Law of Cosines  
  c.   reverse the direction of the second vector and then add them  
  d.   use the same process as for adding them, then change the sign of the value  
  Hint    
      
  12.In Figure 2-8, If the store were on the other side of your aunt's house, what would your final displacement be if you went from your house to the store to your aunt's?  
  a.   0.5 km  
  b.   0.9 km  
  c.   0.2 km  
  d.   0.7 cm  
  Hint    
      
  13.The __________ is the point at which both variables in a coordinate system have the zero value.  
  a.   origin  
  b.   intercept  
  c.   coordinate system  
  d.   axis  
  Hint    
      
  14.Which of the following is not a scalar quantity?  
  a.   25°C  
  b.   150 km southwest  
  c.   314.7 g  
  d.   2 hours 27 minutes  
  Hint    
      
  15.If you travel 1.7 km north from your house at noon, and at 6:00 PM you travel 5.4 km south, what is your displacement?  
  a.   3.7 km  
  b.   7.10 km north  
  c.   3.7 km south  
  d.   7.10 km south  
  Hint    
      
  16.A(n) __________ tells you where the zero point of the variable you are studying is located and the direction in which the values increase.  
  a.   origin  
  b.   axis  
  c.   coordinate system  
  d.   intercept  
  Hint    
      
  17.Which of the following statements is true?  
  a.   The magnitude of a vector is always a positive quantity.  
  b.   The magnitude of a vector can be either a positive or a negative quantity.  
  c.   The magnitude of a vector is always a negative quantity.  
  d.   The direction of a vector is always a positive quantity.  
  Hint    
      
  18.When an object is in motion, its __________ changes.  
  a.   position  
  b.   size  
  c.   shape  
  d.   acceleration  
  Hint    
      
  19.Which of the following correctly describes the displacement of an object that moves from position di to df?  
  a.   Δdf = df + di  
  b.   v = Δd/Δt  
  c.   Δd = df + di  
  d.   Δd = df - di  
  Hint    
      
  20.__________ defines the distance and direction between two positions.  
  a.   A scalar quantity  
  b.   Displacement  
  c.   Average velocity  
  d.   Interval  
  Hint    
      
  21.The horizontal direction in a coordinate system is called the __________.  
  a.   z-axis  
  b.   y-axis  
  c.   x-axis  
  d.   scale  
  Hint    
      
  22.The magnitude of a vector is always __________.  
  a.   a positive quantity  
  b.   equal to the direction  
  c.   a negative quantity  
  d.   equal to the displacement  
  Hint    
      
  23.Two displacements are equal when __________.  
  a.   they begin at the same point  
  b.   they begin and end at the same point  
  c.   the two directions are the same  
  d.   the two distances and directions are the same  
  Hint    
      
  24.The difference between ti and tf is the __________.  
  a.   velocity  
  b.   time interval  
  c.   displacement  
  d.   average speed  
  Hint    

 
   
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