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Motion and Speed

Practice Test
      
  1.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    
      
  2.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.   5.3 h  
  d.   3.52 h  
  Hint    
      
  3.The distance between an object and a reference point is the object's __________.  
  a.   displacement  
  b.   position  
  c.   neutral point  
  d.   velocity  
  Hint    
      
  4.The direction and speed of an object is described by its __________.  
  a.   velocity  
  b.   displacement  
  c.   average displacement  
  d.   average speed  
  Hint    
      
  5.__________ measures an object's tendency to resist changing its motion.  
  a.   Mass  
  b.   Inertia  
  c.   Gravity  
  d.   Acceleration  
  Hint    
      
  6.Motion occurs when an object changes its __________.  
  a.   mass  
  b.   force  
  c.   position  
  d.   volume  
  Hint    
      
  7.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   stratosphere  
  b.   magnetosphere  
  c.   core  
  d.   lithosphere  
  Hint    
      
  8.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    
      
  9.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Acceleration  
  b.   Average velocity  
  c.   Speed  
  d.   Displacement  
  Hint    
      
  10.Any change over time is called a(n) __________.  
  a.   velocity  
  b.   acceleration  
  c.   speed  
  d.   rate  
  Hint    
      
  11.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   velocity  
  b.   motion  
  c.   force  
  d.   acceleration  
  Hint    
      
  12.__________ is the speed of an object at any instant of time.  
  a.   Acceleration  
  b.   Average speed  
  c.   Velocity  
  d.   Instantaneous speed  
  Hint    
      
  13.Forces that cancel each other are called __________ forces.  
  a.   balanced  
  b.   null  
  c.   inactivated  
  d.   neutral  
  Hint    
      
  14.The SI unit of distance is the __________.  
  a.   meter  
  b.   mile  
  c.   liter  
  d.   gram  
  Hint    
      
  15.The distance between the final position and the starting position is the __________.  
  a.   differential  
  b.   acceleration  
  c.   velocity  
  d.   displacement  
  Hint    
      
  16.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.   2.67 km/h  
  b.   4 km/h  
  c.   2 km/h  
  d.   8 km/h  
  Hint    
      
  17.Newton's first law of motion states that __________.  
  a.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  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.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  Hint    
      
  18.The __________ is the combination of all the forces acting on an object.  
  a.   net force  
  b.   force pair  
  c.   direction of motion  
  d.   inertia  
  Hint    
      
  19.__________ is the distance an object travels per unit of time.  
  a.   Displacement  
  b.   Velocity  
  c.   Speed  
  d.   Acceleration  
  Hint    
      
  20.Which of the following devices is used to indicate instantaneous speed?  
  a.   stopwatch  
  b.   compass  
  c.   odometer  
  d.   speedometer  
  Hint    

 
   
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