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Motion and Speed

Practice Test
      
  1.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   position  
  c.   neutral point  
  d.   displacement  
  Hint    
      
  2.__________ is the distance an object travels per unit of time.  
  a.   Velocity  
  b.   Speed  
  c.   Displacement  
  d.   Acceleration  
  Hint    
      
  3.Which of the following devices is used to indicate instantaneous speed?  
  a.   stopwatch  
  b.   compass  
  c.   speedometer  
  d.   odometer  
  Hint    
      
  4.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Speed  
  b.   Acceleration  
  c.   Displacement  
  d.   Average velocity  
  Hint    
      
  5.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 km  
  c.   2.8 km/h  
  d.   10.5 km  
  Hint    
      
  6.The direction and speed of an object is described by its __________.  
  a.   average displacement  
  b.   average speed  
  c.   velocity  
  d.   displacement  
  Hint    
      
  7.Forces that cancel each other are called __________ forces.  
  a.   inactivated  
  b.   null  
  c.   balanced  
  d.   neutral  
  Hint    
      
  8.The __________ is the combination of all the forces acting on an object.  
  a.   direction of motion  
  b.   force pair  
  c.   net force  
  d.   inertia  
  Hint    
      
  9.Average speed is found by __________.  
  a.   dividing total distance traveled by the total time  
  b.   multiplying the displacement by the total time spent  
  c.   dividing the displacement by the total time spent  
  d.   multiplying total distance traveled by the total time  
  Hint    
      
  10.Any change over time is called a(n) __________.  
  a.   velocity  
  b.   speed  
  c.   rate  
  d.   acceleration  
  Hint    
      
  11.__________ is the speed of an object at any instant of time.  
  a.   Instantaneous speed  
  b.   Average speed  
  c.   Velocity  
  d.   Acceleration  
  Hint    
      
  12.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.   2 km/h  
  d.   8 km/h  
  Hint    
      
  13.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   magnetosphere  
  b.   core  
  c.   stratosphere  
  d.   lithosphere  
  Hint    
      
  14.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    
      
  15.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.   3.14 h  
  b.   2.18 h  
  c.   3.52 h  
  d.   5.3 h  
  Hint    
      
  16.Newton's first law of motion states that __________.  
  a.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  b.   an object will remain at rest or keep moving unless a force acts on it  
  c.   when a force acts on an object, its acceleration is in the same direction as the force  
  d.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  Hint    
      
  17.The SI unit of distance is the __________.  
  a.   meter  
  b.   liter  
  c.   gram  
  d.   mile  
  Hint    
      
  18.Motion occurs when an object changes its __________.  
  a.   position  
  b.   mass  
  c.   force  
  d.   volume  
  Hint    
      
  19.To calculate the distance traveled continuously in a straight line, __________.  
  a.   subtract final position from starting position  
  b.   divide the change in velocity by the time over which the change occurs  
  c.   subtract the time needed to travel the distance by the total distance traveled  
  d.   divide the distance traveled by the time needed to travel the distance  
  Hint    
      
  20.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 north  
  b.   7.1 km south  
  c.   3.7 km south  
  d.   3.7 km  
  Hint    

 
   
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