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Motion and Speed

Practice Test
      
  1.The __________ is the combination of all the forces acting on an object.  
  a.   inertia  
  b.   force pair  
  c.   net force  
  d.   direction of motion  
  Hint    
      
  2.Which of the following is not an acceleration?  
  a.   riding your bike faster when you ride down a hill  
  b.   slowing your bike ride so you can make it up a hill  
  c.   stopping your bike at an intersection  
  d.   riding your bike straight down the street at a constant speed  
  Hint    
      
  3.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.   10.5 km  
  b.   2.8 km/h  
  c.   10 km  
  d.   11 km  
  Hint    
      
  4.Any change over time is called a(n) __________.  
  a.   speed  
  b.   rate  
  c.   acceleration  
  d.   velocity  
  Hint    
      
  5.Motion occurs when an object changes its __________.  
  a.   volume  
  b.   mass  
  c.   force  
  d.   position  
  Hint    
      
  6.__________ is the speed of an object at any instant of time.  
  a.   Acceleration  
  b.   Velocity  
  c.   Average speed  
  d.   Instantaneous speed  
  Hint    
      
  7.The SI unit of distance is the __________.  
  a.   liter  
  b.   mile  
  c.   gram  
  d.   meter  
  Hint    
      
  8.To calculate the distance traveled continuously in a straight line, __________.  
  a.   divide the change in velocity by the time over which the change occurs  
  b.   subtract the time needed to travel the distance by the total distance traveled  
  c.   subtract final position from starting position  
  d.   divide the distance traveled by the time needed to travel the distance  
  Hint    
      
  9.__________ measures an object's tendency to resist changing its motion.  
  a.   Acceleration  
  b.   Mass  
  c.   Gravity  
  d.   Inertia  
  Hint    
      
  10.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Speed  
  b.   Average velocity  
  c.   Acceleration  
  d.   Displacement  
  Hint    
      
  11.Which of the following devices is used to indicate instantaneous speed?  
  a.   stopwatch  
  b.   speedometer  
  c.   compass  
  d.   odometer  
  Hint    
      
  12.The distance between the final position and the starting position is the __________.  
  a.   differential  
  b.   displacement  
  c.   acceleration  
  d.   velocity  
  Hint    
      
  13.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   magnetosphere  
  b.   core  
  c.   lithosphere  
  d.   stratosphere  
  Hint    
      
  14.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   motion  
  b.   acceleration  
  c.   velocity  
  d.   force  
  Hint    
      
  15.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   displacement  
  c.   neutral point  
  d.   position  
  Hint    
      
  16.The direction and speed of an object is described by its __________.  
  a.   velocity  
  b.   average speed  
  c.   displacement  
  d.   average displacement  
  Hint    
      
  17.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    
      
  18.Newton's first law of motion states that __________.  
  a.   when a force acts on an object, its acceleration is in the same direction as the force  
  b.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  c.   an object will remain at rest or keep moving unless a force acts on it  
  d.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  Hint    
      
  19.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Velocity  
  c.   Acceleration  
  d.   Displacement  
  Hint    
      
  20.Forces that cancel each other are called __________ forces.  
  a.   balanced  
  b.   neutral  
  c.   null  
  d.   inactivated  
  Hint    

 
   
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