A2L Item 169

Goal: Link acceleration to the slope of a velocity/time graph

Source: CT151.2-6

An
object’s motion is described by the graph above. The instantaneous
acceleration at t=10 sec is most nearly…

  1. 0 m/s2
  2. -2 m/s2
  3. 3 m/s2
  4. -4 m/s2
  5. 5 m/s2
  6. Other

Commentary:

Answer

(1) Useful follow-up questions include; when does the object have
positive acceleration, when negative acceleration; does the object ever
stop?; when is it farthest from the origin?