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Motion and Speed

Practice Test
      
  1.The distance between the final position and the starting position is the __________.  
  a.   velocity  
  b.   differential  
  c.   acceleration  
  d.   displacement  
  Hint    
      
  2.To calculate the distance traveled continuously in a straight line, __________.  
  a.   subtract the time needed to travel the distance by the total distance traveled  
  b.   divide the change in velocity by the time over which the change occurs  
  c.   divide the distance traveled by the time needed to travel the distance  
  d.   subtract final position from starting position  
  Hint    
      
  3.The direction and speed of an object is described by its __________.  
  a.   displacement  
  b.   velocity  
  c.   average speed  
  d.   average displacement  
  Hint    
      
  4.Which of the following devices is used to indicate instantaneous speed?  
  a.   odometer  
  b.   compass  
  c.   speedometer  
  d.   stopwatch  
  Hint    
      
  5.Newton's first law of motion states that __________.  
  a.   an object will remain at rest or keep moving unless a force acts on it  
  b.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  c.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  d.   when a force acts on an object, its acceleration is in the same direction as the force  
  Hint    
      
  6.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   lithosphere  
  b.   magnetosphere  
  c.   core  
  d.   stratosphere  
  Hint    
      
  7.Motion occurs when an object changes its __________.  
  a.   force  
  b.   position  
  c.   volume  
  d.   mass  
  Hint    
      
  8.__________ measures an object's tendency to resist changing its motion.  
  a.   Gravity  
  b.   Mass  
  c.   Inertia  
  d.   Acceleration  
  Hint    
      
  9.The __________ is the combination of all the forces acting on an object.  
  a.   direction of motion  
  b.   force pair  
  c.   inertia  
  d.   net force  
  Hint    
      
  10.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.   4 km/h  
  b.   2.67 km/h  
  c.   8 km/h  
  d.   2 km/h  
  Hint    
      
  11.The SI unit of distance is the __________.  
  a.   gram  
  b.   mile  
  c.   liter  
  d.   meter  
  Hint    
      
  12.Any change over time is called a(n) __________.  
  a.   velocity  
  b.   acceleration  
  c.   rate  
  d.   speed  
  Hint    
      
  13.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.   3.52 h  
  b.   3.14 h  
  c.   2.18 h  
  d.   5.3 h  
  Hint    
      
  14.The distance between an object and a reference point is the object's __________.  
  a.   position  
  b.   velocity  
  c.   neutral point  
  d.   displacement  
  Hint    
      
  15.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   velocity  
  b.   acceleration  
  c.   motion  
  d.   force  
  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.   10 km  
  b.   2.8 km/h  
  c.   11 km  
  d.   10.5 km  
  Hint    
      
  17.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    
      
  18.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Displacement  
  b.   Average velocity  
  c.   Speed  
  d.   Acceleration  
  Hint    
      
  19.Forces that cancel each other are called __________ forces.  
  a.   neutral  
  b.   null  
  c.   inactivated  
  d.   balanced  
  Hint    
      
  20.Average speed is found by __________.  
  a.   multiplying total distance traveled by the total time  
  b.   dividing total distance traveled by the total time  
  c.   dividing the displacement by the total time spent  
  d.   multiplying the displacement by the total time spent  
  Hint    

 
   
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