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Motion and Speed

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

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