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Motion and Speed

Practice Test
      
  1.Average speed is found by __________.  
  a.   dividing the displacement by the total time spent  
  b.   dividing total distance traveled by the total time  
  c.   multiplying the displacement by the total time spent  
  d.   multiplying total distance traveled by the total time  
  Hint    
      
  2.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   neutral  
  c.   balanced  
  d.   inactivated  
  Hint    
      
  3.__________ is the speed of an object at any instant of time.  
  a.   Instantaneous speed  
  b.   Acceleration  
  c.   Average speed  
  d.   Velocity  
  Hint    
      
  4.The SI unit of distance is the __________.  
  a.   liter  
  b.   gram  
  c.   meter  
  d.   mile  
  Hint    
      
  5.Which of the following devices is used to indicate instantaneous speed?  
  a.   compass  
  b.   stopwatch  
  c.   speedometer  
  d.   odometer  
  Hint    
      
  6.Motion occurs when an object changes its __________.  
  a.   mass  
  b.   position  
  c.   volume  
  d.   force  
  Hint    
      
  7.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   magnetosphere  
  b.   lithosphere  
  c.   core  
  d.   stratosphere  
  Hint    
      
  8.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Speed  
  b.   Displacement  
  c.   Acceleration  
  d.   Average velocity  
  Hint    
      
  9.If a runner maintains a constant speed of 12 km/h, how long will it take to complete a marathon race of 26.2 miles?  
  a.   5.3 h  
  b.   2.18 h  
  c.   3.52 h  
  d.   3.14 h  
  Hint    
      
  10.The distance between the final position and the starting position is the __________.  
  a.   differential  
  b.   acceleration  
  c.   displacement  
  d.   velocity  
  Hint    
      
  11.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   motion  
  b.   acceleration  
  c.   force  
  d.   velocity  
  Hint    
      
  12.Any change over time is called a(n) __________.  
  a.   rate  
  b.   acceleration  
  c.   velocity  
  d.   speed  
  Hint    
      
  13.The distance between an object and a reference point is the object's __________.  
  a.   position  
  b.   velocity  
  c.   neutral point  
  d.   displacement  
  Hint    
      
  14.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.   7.1 km south  
  b.   3.7 km south  
  c.   7.1 km north  
  d.   3.7 km  
  Hint    
      
  15.Which of the following is not an acceleration?  
  a.   stopping your bike at an intersection  
  b.   slowing your bike ride so you can make it up a hill  
  c.   riding your bike faster when you ride down a hill  
  d.   riding your bike straight down the street at a constant speed  
  Hint    
      
  16.At 8:00 AM you leave home and walk 0.5 km to a friend's house. At 11:30 AM you return home, then travel by car to the mall, which is 10 km away, and arrive at 11:45 AM. What is the total distance traveled?  
  a.   11 km  
  b.   10.5 km  
  c.   10 km  
  d.   2.8 km/h  
  Hint    
      
  17.To calculate the distance traveled continuously in a straight line, __________.  
  a.   subtract final position from starting position  
  b.   divide the distance traveled by the time needed to travel the distance  
  c.   divide the change in velocity by the time over which the change occurs  
  d.   subtract the time needed to travel the distance by the total distance traveled  
  Hint    
      
  18.If a student leaves home at 7:30 AM to walk to his school 2 km away, stops at a neighbor's house for 15 min, then arrives at school at 8:00 AM, what is the student's average speed for the trip to school?  
  a.   2 km/h  
  b.   4 km/h  
  c.   8 km/h  
  d.   2.67 km/h  
  Hint    
      
  19.The direction and speed of an object is described by its __________.  
  a.   average displacement  
  b.   displacement  
  c.   velocity  
  d.   average speed  
  Hint    
      
  20.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Acceleration  
  c.   Displacement  
  d.   Velocity  
  Hint    

 
   
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