Study the image of the roller coaster, then answer the questions. Note that the arrows indicate the direction of the movement of the roller coaster train.
Which section (A or B) of the roller coaster shows positive acceleration?
Which section (A or B) of the roller coaster shows negative acceleration?
Section A shows positive acceleration, as the roller coaster train is moving in the direction of the arrow, indicating an increase in speed.
Section B shows negative acceleration, as the roller coaster train is moving against the arrow, indicating a decrease in speed.