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Quizzes Quiz
Motion and Speed

Practice Test
  1.The direction and speed of an object is described by its __________.  
  a.   average speed  
  b.   displacement  
  c.   average displacement  
  d.   velocity  
  2.Which of the following devices is used to indicate instantaneous speed?  
  a.   compass  
  b.   speedometer  
  c.   stopwatch  
  d.   odometer  
  3.The __________ is the combination of all the forces acting on an object.  
  a.   net force  
  b.   inertia  
  c.   force pair  
  d.   direction of motion  
  4.The distance between the final position and the starting position is the __________.  
  a.   displacement  
  b.   differential  
  c.   velocity  
  d.   acceleration  
  5.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   core  
  b.   magnetosphere  
  c.   stratosphere  
  d.   lithosphere  
  6.__________ is the speed of an object at any instant of time.  
  a.   Instantaneous speed  
  b.   Average speed  
  c.   Velocity  
  d.   Acceleration  
  7.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   velocity  
  b.   force  
  c.   acceleration  
  d.   motion  
  8.__________ measures an object's tendency to resist changing its motion.  
  a.   Inertia  
  b.   Mass  
  c.   Acceleration  
  d.   Gravity  
  9.The SI unit of distance is the __________.  
  a.   mile  
  b.   gram  
  c.   meter  
  d.   liter  
  10.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.   3.7 km  
  d.   7.1 km south  
  11.Average speed is found by __________.  
  a.   multiplying the displacement by the total time spent  
  b.   dividing the displacement by the total time spent  
  c.   multiplying total distance traveled by the total time  
  d.   dividing total distance traveled by the total time  
  12.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.   2.8 km/h  
  b.   11 km  
  c.   10 km  
  d.   10.5 km  
  13.Motion occurs when an object changes its __________.  
  a.   force  
  b.   mass  
  c.   position  
  d.   volume  
  14.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   neutral  
  c.   inactivated  
  d.   balanced  
  15.__________ is the distance an object travels per unit of time.  
  a.   Displacement  
  b.   Velocity  
  c.   Acceleration  
  d.   Speed  
  16.Which of the following is not an acceleration?  
  a.   riding your bike faster when you ride down a hill  
  b.   stopping your bike at an intersection  
  c.   slowing your bike ride so you can make it up a hill  
  d.   riding your bike straight down the street at a constant speed  
  17.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Speed  
  b.   Average velocity  
  c.   Acceleration  
  d.   Displacement  
  18.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.   2.18 h  
  c.   3.14 h  
  d.   3.52 h  
  19.Any change over time is called a(n) __________.  
  a.   acceleration  
  b.   velocity  
  c.   speed  
  d.   rate  
  20.Newton's first law of motion states that __________.  
  a.   an object will remain at rest or keep moving unless a force acts on it  
  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.   when a force acts on an object, its acceleration is in the same direction as the force  

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