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PS CH 11 Vocabulary (3)
供稿人: Conway
  • 1. A system of objects that are not moving with respect to one another.
A) solar system
B) collection
C) frame of reference
  • 2. Movement in relation to a frame of reference.
A) relative motion
B) habitual motion
C) spontaneous motion
  • 3. The length of a path between two points.
A) acceleration
B) speed
C) distance
  • 4. A quantity that has a direction associated with it.
A) quantum
B) vector
C) scalar
  • 5. The vector sum of two or more vectors.
A) continuos vector
B) resultant vector
  • 6. The ratio of the distance an object moves to the amount of time the object moves.
A) speed
B) acceleration
C) displacement
  • 7. The total distance traveled divided by the time it takes to travel that distance.
A) virtual speed
B) instantaneous speed
C) average speed
  • 8. The rate at which an object is moving at a given moment in time.
A) instantaneous speed
B) spontaneous speed
C) immediate speed
  • 9. The speed and direction in which an object is moving , measured relative to a reference point.
A) acceleration
B) velocity
C) displacement
  • 10. the rate at which velocity changes
A) momentum
B) acceleration
C) instantaneous speed
  • 11. The movement of an object toward earth solely because of gravity.
A) wind resistance
B) free fall
C) gravity motion
  • 12. A steady change in velocity.
A) constant acceleration
B) constant speed
C) constant velocity
  • 13. A graph in which the displayed data form a straight line.
A) circle graph
B) nonlinear graph
C) linear graph
  • 14. A graph in which the displayed data form a curved line.
A) linear graph
B) nonlinear graph
C) bar graph
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