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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.   acceleration  
  b.   force  
  c.   velocity  
  d.   motion  
  2.To calculate the distance traveled continuously in a straight line, __________.  
  a.   divide the distance traveled by the time needed to travel the distance  
  b.   divide the change in velocity by the time over which the change occurs  
  c.   subtract final position from starting position  
  d.   subtract the time needed to travel the distance by the total distance traveled  
  3.Which of the following is not an acceleration?  
  a.   riding your bike straight down the street at a constant speed  
  b.   stopping your bike at an intersection  
  c.   riding your bike faster when you ride down a hill  
  d.   slowing your bike ride so you can make it up a hill  
  4.Which of the following devices is used to indicate instantaneous speed?  
  a.   compass  
  b.   stopwatch  
  c.   speedometer  
  d.   odometer  
  5.__________ is the change in velocity divided by the time needed for the change to occur.  
  a.   Displacement  
  b.   Acceleration  
  c.   Speed  
  d.   Average velocity  
  6.Changes in which of the following of Earth's layers cause earthquakes?  
  a.   lithosphere  
  b.   stratosphere  
  c.   magnetosphere  
  d.   core  
  7.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.   5.3 h  
  c.   3.52 h  
  d.   2.18 h  
  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.   11 km  
  b.   10.5 km  
  c.   2.8 km/h  
  d.   10 km  
  9.__________ measures an object's tendency to resist changing its motion.  
  a.   Gravity  
  b.   Acceleration  
  c.   Inertia  
  d.   Mass  
  10.The distance between an object and a reference point is the object's __________.  
  a.   velocity  
  b.   position  
  c.   neutral point  
  d.   displacement  
  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 south  
  b.   3.7 km  
  c.   7.1 km south  
  d.   7.1 km north  
  12.Any change over time is called a(n) __________.  
  a.   rate  
  b.   speed  
  c.   acceleration  
  d.   velocity  
  13.Newton's first law of motion states that __________.  
  a.   acceleration is calculated by dividing the force exerted on an object by the mass of the object  
  b.   when a force acts on an object, its acceleration is in the same direction as the force  
  c.   an object will remain at rest or keep moving unless a force acts on it  
  d.   when a force is applied on an object, there is an equal force applied by the object in the opposite direction  
  14.Forces that cancel each other are called __________ forces.  
  a.   inactivated  
  b.   null  
  c.   balanced  
  d.   neutral  
  15.__________ is the distance an object travels per unit of time.  
  a.   Speed  
  b.   Velocity  
  c.   Displacement  
  d.   Acceleration  
  16.The SI unit of distance is the __________.  
  a.   mile  
  b.   meter  
  c.   liter  
  d.   gram  
  17.The __________ is the combination of all the forces acting on an object.  
  a.   net force  
  b.   direction of motion  
  c.   inertia  
  d.   force pair  
  18.The direction and speed of an object is described by its __________.  
  a.   average displacement  
  b.   velocity  
  c.   displacement  
  d.   average speed  
  19.Average speed is found by __________.  
  a.   dividing the displacement by the total time spent  
  b.   multiplying the displacement by the total time spent  
  c.   dividing total distance traveled by the total time  
  d.   multiplying total distance traveled by the total time  
  20.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  

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