Do not use any notes, books or other materials to help you answer these
questions. You may use a calculator.

• 1) What is relative motion.
  

  Motion that depends on Earth's location
  movement relative to a frame of reference
  when your grandparents move to Missouri
  motion that depends on time
• 2) What is the difference between distance and displacement?
  

  Distance is the straight line from start to finish; Displacement is how much a liquid level goes up when you place a rock into a glass of waters up
  Distance is measured in miles; Displacement is measured in meters
  Displacement is a straight line from stop to finish; distance always follows a curved path to the finish
  Distance is the actual length an object moves; Displacement is the straight line distance from a starting point to a stopping point
• 3) A runner completes 2 laps around a track. How is his average speed
  calculated?
  

  Take the total distance run and divide by the elapsed time
  Take the time for both laps and divide by two
  Take the speed for both laps and divide by two
  add up the distance for both laps and divide by two
• 4) On a distance-time graph, what does the slope represent?
  

  How steep the hill was
  the object's speed
  the average position
  the average acceleration
• 5) What is velocity?
  

  how fast something is moving
  Velocity is how fast an object's direction changes.
  Velocity is a vector consisting of the speed and direction of a moving object
  Velocity is the scalar speed of an object per time.
• 6) How is acceleration related to velocity?
  

  Acceleration is the change in velocity divided by the change in time
  Acceleration is the average velocity divided by the time
  Acceleration is not related to velocity - they are two separate ideas
  Acceleration is velocity only with a given direction
• 7) A backpack falls out of an open window. The backpack starts from rest
  and hits the ground 1.0 seconds later with a velocity of 9.8 m/s.
  What was the average acceleration of the backpack?
  

  not enough information
  -1.0 m/s^2
  -4.9 m/s^2
  -9.8 m/s^2
• 8) How are mass and weight different?
  

  Weight is everywhere the same; mass changes with location
  Weight is another name for mass.
  Mass is how much "stuff" an object is made of; weight is the force caused by gravity pulling on the object's mass
  Mass is measured with a spring scale; weight is measured with a balance.
• 9) If two forces act in opposite directions on an object, how do you
  determine the net force on the object?
  

  multiply the forces together, paying attention the signs of the forces
  add the forces together, paying attention the signs of the forces
  The net force is just up force minus the down force
  Determine the weight of the net.
• 10) What effect do balanced forces have on an object?
  

  it depends on the direction of the forces
  they will cause the object to accelerate
  no effect
  they cause an object to weigh more
• 11) What effect do unbalanced forces have on an object?
  

  they result in a net force which causes an object to accelerate
  no effect
  unbalanced forces cause an object to weigh more
  depends on the momentum of the forces
• 12) Which units would you use to describe the area of a chalkboard?
  

  meters (m)
  square meters (m^2)
  cubic meters (m^3)
  cubic milliliters
• 13) Which of the following defines weight?
  

  the amount of matter in an object
  the force due to gravity acting on the mass of an object
  same as mass
  your mass adjusted for your location
• 14) A tennis ball has a volume of 125 cm^3 and a mass of 57 g. What is the
  ball's average density?
  

  7125 g/cm^3
  0.456 g/cm^3
  182 g/cm^3
  2.19 g/cm^3
• 15) The distance between a home and school is 6.35 km. What is this
  distance in meters?
  

  63,500 m
  6350 m
  635 m
  63.5 m