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Motion and Speed

Practice Test
      
  1.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Acceleration  
  c.   Velocity  
  d.   Displacement  
  Hint    
      
  2.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   force  
  b.   velocity  
  c.   acceleration  
  d.   motion  
  Hint    
      
  3.Motion occurs when an object changes its __________.  
  a.   force  
  b.   volume  
  c.   mass  
  d.   position  
  Hint    
      
  4.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.   divide the distance traveled by the time needed to travel the distance  
  c.   subtract the time needed to travel the distance by the total distance traveled  
  d.   subtract final position from starting position  
  Hint    
      
  5.__________ measures an object's tendency to resist changing its motion.  
  a.   Acceleration  
  b.   Gravity  
  c.   Mass  
  d.   Inertia  
  Hint    
      
  6.__________ is the speed of an object at any instant of time.  
  a.   Average speed  
  b.   Acceleration  
  c.   Instantaneous speed  
  d.   Velocity  
  Hint    
      
  7.The distance between the final position and the starting position is the __________.  
  a.   differential  
  b.   displacement  
  c.   acceleration  
  d.   velocity  
  Hint    
      
  8.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.   3.7 km  
  b.   7.1 km south  
  c.   3.7 km south  
  d.   7.1 km north  
  Hint    
      
  9.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.   11 km  
  c.   2.8 km/h  
  d.   10 km  
  Hint    
      
  10.The direction and speed of an object is described by its __________.  
  a.   displacement  
  b.   average speed  
  c.   velocity  
  d.   average displacement  
  Hint    
      
  11.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    
      
  12.Forces that cancel each other are called __________ forces.  
  a.   inactivated  
  b.   balanced  
  c.   null  
  d.   neutral  
  Hint    
      
  13.Which of the following is not an acceleration?  
  a.   stopping your bike at an intersection  
  b.   riding your bike faster when you ride down a hill  
  c.   riding your bike straight down the street at a constant speed  
  d.   slowing your bike ride so you can make it up a hill  
  Hint    
      
  14.Which of the following devices is used to indicate instantaneous speed?  
  a.   speedometer  
  b.   stopwatch  
  c.   odometer  
  d.   compass  
  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.   5.3 h  
  c.   2.18 h  
  d.   3.52 h  
  Hint    
      
  16.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   stratosphere  
  b.   magnetosphere  
  c.   lithosphere  
  d.   core  
  Hint    
      
  17.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    
      
  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.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  d.   an object will remain at rest or keep moving unless a force acts on it  
  Hint    
      
  19.The distance between an object and a reference point is the object's __________.  
  a.   position  
  b.   neutral point  
  c.   displacement  
  d.   velocity  
  Hint    
      
  20.Any change over time is called a(n) __________.  
  a.   speed  
  b.   velocity  
  c.   acceleration  
  d.   rate  
  Hint    

 
   
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