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Motion and Speed

Practice Test
  1.Any change over time is called a(n) __________.  
  a.   velocity  
  b.   acceleration  
  c.   rate  
  d.   speed  
  2.Which of the following is not an acceleration?  
  a.   stopping your bike at an intersection  
  b.   riding your bike straight down the street at a constant speed  
  c.   slowing your bike ride so you can make it up a hill  
  d.   riding your bike faster when you ride down a hill  
  3.To calculate the distance traveled continuously in a straight line, __________.  
  a.   divide the distance traveled by the time needed to travel the distance  
  b.   subtract final position from starting position  
  c.   divide the change in velocity by the time over which the change occurs  
  d.   subtract the time needed to travel the distance by the total distance traveled  
  4.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Average velocity  
  b.   Speed  
  c.   Displacement  
  d.   Acceleration  
  5.Which of the following devices is used to indicate instantaneous speed?  
  a.   stopwatch  
  b.   compass  
  c.   odometer  
  d.   speedometer  
  6.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   neutral point  
  c.   displacement  
  d.   position  
  7.Forces that cancel each other are called __________ forces.  
  a.   neutral  
  b.   null  
  c.   inactivated  
  d.   balanced  
  8.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.   2.8 km/h  
  c.   11 km  
  d.   10 km  
  9.A(n) __________ is a push or a pull that one body exerts on another.  
  a.   velocity  
  b.   acceleration  
  c.   force  
  d.   motion  
  10.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   core  
  b.   magnetosphere  
  c.   lithosphere  
  d.   stratosphere  
  11.The direction and speed of an object is described by its __________.  
  a.   average speed  
  b.   average displacement  
  c.   velocity  
  d.   displacement  
  12.Motion occurs when an object changes its __________.  
  a.   volume  
  b.   position  
  c.   mass  
  d.   force  
  13.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.   when a force acts on an object, its acceleration is in the same direction as the force  
  c.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  d.   an object will remain at rest or keep moving unless a force acts on it  
  14.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.   3.52 h  
  d.   5.3 h  
  15.The distance between the final position and the starting position is the __________.  
  a.   displacement  
  b.   acceleration  
  c.   differential  
  d.   velocity  
  16.The __________ is the combination of all the forces acting on an object.  
  a.   inertia  
  b.   net force  
  c.   force pair  
  d.   direction of motion  
  17.__________ is the distance an object travels per unit of time.  
  a.   Displacement  
  b.   Acceleration  
  c.   Speed  
  d.   Velocity  
  18.Average speed is found by __________.  
  a.   dividing the displacement by the total time spent  
  b.   multiplying 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  
  19.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.   3.7 km  
  d.   7.1 km south  
  20.__________ is the speed of an object at any instant of time.  
  a.   Acceleration  
  b.   Velocity  
  c.   Instantaneous speed  
  d.   Average speed  

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