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Motion and Speed

Practice Test
      
  1.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   neutral  
  c.   inactivated  
  d.   balanced  
  Hint    
      
  2.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.   3.7 km south  
  c.   7.1 km south  
  d.   3.7 km  
  Hint    
      
  3.The distance between an object and a reference point is the object's __________.  
  a.   position  
  b.   neutral point  
  c.   velocity  
  d.   displacement  
  Hint    
      
  4.The __________ is the combination of all the forces acting on an object.  
  a.   net force  
  b.   inertia  
  c.   direction of motion  
  d.   force pair  
  Hint    
      
  5.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   stratosphere  
  b.   magnetosphere  
  c.   core  
  d.   lithosphere  
  Hint    
      
  6.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.   riding your bike straight down the street at a constant speed  
  d.   stopping your bike at an intersection  
  Hint    
      
  7.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Velocity  
  c.   Displacement  
  d.   Acceleration  
  Hint    
      
  8.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   force  
  b.   velocity  
  c.   acceleration  
  d.   motion  
  Hint    
      
  9.__________ is the speed of an object at any instant of time.  
  a.   Acceleration  
  b.   Instantaneous speed  
  c.   Average speed  
  d.   Velocity  
  Hint    
      
  10.Any change over time is called a(n) __________.  
  a.   rate  
  b.   speed  
  c.   velocity  
  d.   acceleration  
  Hint    
      
  11.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Speed  
  b.   Displacement  
  c.   Acceleration  
  d.   Average velocity  
  Hint    
      
  12.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.   5.3 h  
  b.   3.52 h  
  c.   3.14 h  
  d.   2.18 h  
  Hint    
      
  13.The SI unit of distance is the __________.  
  a.   gram  
  b.   liter  
  c.   meter  
  d.   mile  
  Hint    
      
  14.Motion occurs when an object changes its __________.  
  a.   volume  
  b.   position  
  c.   force  
  d.   mass  
  Hint    
      
  15.Average speed is found by __________.  
  a.   dividing total distance traveled by the total time  
  b.   multiplying total distance traveled by the total time  
  c.   multiplying the displacement by the total time spent  
  d.   dividing the displacement by the total time spent  
  Hint    
      
  16.The distance between the final position and the starting position is the __________.  
  a.   velocity  
  b.   acceleration  
  c.   displacement  
  d.   differential  
  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.   2.67 km/h  
  b.   4 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.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  c.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  d.   an object will remain at rest or keep moving unless a force acts on it  
  Hint    
      
  19.The direction and speed of an object is described by its __________.  
  a.   average speed  
  b.   velocity  
  c.   displacement  
  d.   average displacement  
  Hint    
      
  20.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.   10.5 km  
  d.   11 km  
  Hint    

 
   
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