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Quizzes Quiz
Motion and Speed

Practice Test
  1.__________ measures an object's tendency to resist changing its motion.  
  a.   Gravity  
  b.   Mass  
  c.   Acceleration  
  d.   Inertia  
  2.Any change over time is called a(n) __________.  
  a.   acceleration  
  b.   speed  
  c.   velocity  
  d.   rate  
  3.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   velocity  
  b.   motion  
  c.   acceleration  
  d.   force  
  4.The __________ is the combination of all the forces acting on an object.  
  a.   direction of motion  
  b.   force pair  
  c.   net force  
  d.   inertia  
  5.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   balanced  
  c.   inactivated  
  d.   neutral  
  6.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  
  7.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Average velocity  
  b.   Speed  
  c.   Displacement  
  d.   Acceleration  
  8.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   core  
  b.   magnetosphere  
  c.   lithosphere  
  d.   stratosphere  
  9.The direction and speed of an object is described by its __________.  
  a.   average speed  
  b.   average displacement  
  c.   velocity  
  d.   displacement  
  10.Which of the following devices is used to indicate instantaneous speed?  
  a.   compass  
  b.   speedometer  
  c.   stopwatch  
  d.   odometer  
  11.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  
  12.__________ is the speed of an object at any instant of time.  
  a.   Average speed  
  b.   Instantaneous speed  
  c.   Acceleration  
  d.   Velocity  
  13.Motion occurs when an object changes its __________.  
  a.   volume  
  b.   position  
  c.   force  
  d.   mass  
  14.__________ is the distance an object travels per unit of time.  
  a.   Displacement  
  b.   Acceleration  
  c.   Velocity  
  d.   Speed  
  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.   2.18 h  
  c.   5.3 h  
  d.   3.52 h  
  16.Average speed is found by __________.  
  a.   dividing the displacement by the total time spent  
  b.   multiplying total distance traveled by the total time  
  c.   dividing total distance traveled by the total time  
  d.   multiplying the displacement by the total time spent  
  17.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.   10 km  
  c.   2.8 km/h  
  d.   11 km  
  18.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.   4 km/h  
  c.   2.67 km/h  
  d.   2 km/h  
  19.The SI unit of distance is the __________.  
  a.   gram  
  b.   meter  
  c.   liter  
  d.   mile  
  20.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   position  
  c.   displacement  
  d.   neutral point  

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