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Motion and Speed

Practice Test
      
  1.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    
      
  2.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   neutral  
  c.   balanced  
  d.   inactivated  
  Hint    
      
  3.The SI unit of distance is the __________.  
  a.   mile  
  b.   gram  
  c.   liter  
  d.   meter  
  Hint    
      
  4.__________ is the speed of an object at any instant of time.  
  a.   Average speed  
  b.   Acceleration  
  c.   Velocity  
  d.   Instantaneous speed  
  Hint    
      
  5.Motion occurs when an object changes its __________.  
  a.   position  
  b.   volume  
  c.   force  
  d.   mass  
  Hint    
      
  6.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.   8 km/h  
  b.   2 km/h  
  c.   2.67 km/h  
  d.   4 km/h  
  Hint    
      
  7.__________ measures an object's tendency to resist changing its motion.  
  a.   Acceleration  
  b.   Gravity  
  c.   Inertia  
  d.   Mass  
  Hint    
      
  8.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   lithosphere  
  b.   magnetosphere  
  c.   core  
  d.   stratosphere  
  Hint    
      
  9.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.   2.18 h  
  b.   3.14 h  
  c.   5.3 h  
  d.   3.52 h  
  Hint    
      
  10.Any change over time is called a(n) __________.  
  a.   rate  
  b.   speed  
  c.   acceleration  
  d.   velocity  
  Hint    
      
  11.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.   divide the distance traveled by the time needed to travel the distance  
  d.   subtract final position from starting position  
  Hint    
      
  12.The __________ is the combination of all the forces acting on an object.  
  a.   inertia  
  b.   direction of motion  
  c.   net force  
  d.   force pair  
  Hint    
      
  13.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    
      
  14.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Displacement  
  c.   Acceleration  
  d.   Velocity  
  Hint    
      
  15.Which of the following devices is used to indicate instantaneous speed?  
  a.   odometer  
  b.   speedometer  
  c.   compass  
  d.   stopwatch  
  Hint    
      
  16.The distance between an object and a reference point is the object's __________.  
  a.   neutral point  
  b.   displacement  
  c.   velocity  
  d.   position  
  Hint    
      
  17.Average speed is found by __________.  
  a.   dividing the displacement by the total time spent  
  b.   multiplying the displacement by the total time spent  
  c.   dividing total distance traveled by the total time  
  d.   multiplying total distance traveled by the total time  
  Hint    
      
  18.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 south  
  b.   7.1 km north  
  c.   7.1 km south  
  d.   3.7 km  
  Hint    
      
  19.The distance between the final position and the starting position is the __________.  
  a.   acceleration  
  b.   displacement  
  c.   velocity  
  d.   differential  
  Hint    
      
  20.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   force  
  b.   acceleration  
  c.   velocity  
  d.   motion  
  Hint    

 
   
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