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Quizzes Quiz
Motion and Speed

Practice Test
  1.__________ is the speed of an object at any instant of time.  
  a.   Acceleration  
  b.   Velocity  
  c.   Instantaneous speed  
  d.   Average speed  
  2.__________ measures an object's tendency to resist changing its motion.  
  a.   Mass  
  b.   Inertia  
  c.   Gravity  
  d.   Acceleration  
  3.Newton's first law of motion states that __________.  
  a.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  b.   an object will remain at rest or keep moving unless a force acts on it  
  c.   when a force acts on an object, its acceleration is in the same direction as the force  
  d.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  4.The direction and speed of an object is described by its __________.  
  a.   average displacement  
  b.   velocity  
  c.   displacement  
  d.   average speed  
  5.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.   3.52 h  
  d.   3.14 h  
  6.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Displacement  
  b.   Average velocity  
  c.   Speed  
  d.   Acceleration  
  7.Forces that cancel each other are called __________ forces.  
  a.   null  
  b.   balanced  
  c.   neutral  
  d.   inactivated  
  8.To calculate the distance traveled continuously in a straight line, __________.  
  a.   subtract final position from starting position  
  b.   divide the change in velocity by the time over which the change occurs  
  c.   subtract the time needed to travel the distance by the total distance traveled  
  d.   divide the distance traveled by the time needed to travel the distance  
  9.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.   3.7 km south  
  c.   7.1 km north  
  d.   7.1 km south  
  10.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   position  
  c.   neutral point  
  d.   displacement  
  11.Any change over time is called a(n) __________.  
  a.   speed  
  b.   rate  
  c.   velocity  
  d.   acceleration  
  12.The __________ is the combination of all the forces acting on an object.  
  a.   inertia  
  b.   net force  
  c.   direction of motion  
  d.   force pair  
  13.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 km/h  
  b.   4 km/h  
  c.   8 km/h  
  d.   2.67 km/h  
  14.The distance between the final position and the starting position is the __________.  
  a.   acceleration  
  b.   differential  
  c.   velocity  
  d.   displacement  
  15.Motion occurs when an object changes its __________.  
  a.   force  
  b.   position  
  c.   mass  
  d.   volume  
  16.__________ is the distance an object travels per unit of time.  
  a.   Acceleration  
  b.   Speed  
  c.   Velocity  
  d.   Displacement  
  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 km  
  b.   10.5 km  
  c.   11 km  
  d.   2.8 km/h  
  18.Which of the following is not an acceleration?  
  a.   slowing your bike ride so you can make it up a hill  
  b.   riding your bike faster when you ride down a hill  
  c.   stopping your bike at an intersection  
  d.   riding your bike straight down the street at a constant speed  
  19.Which of the following devices is used to indicate instantaneous speed?  
  a.   odometer  
  b.   speedometer  
  c.   stopwatch  
  d.   compass  
  20.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   motion  
  b.   velocity  
  c.   acceleration  
  d.   force  

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