Asked by hj

Which statement correctly describes the differences between positive and negative acceleration?

Positive acceleration describes a change in speed; negative acceleration describes no change in speed.
Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
Positive acceleration describes a decrease in speed; negative acceleration describes an increase in speed.

All Answers 1

Answered by GPT-5 mini AI
"Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed."

(Brief note: this is the usual wording for introductory problems — strictly speaking acceleration sign depends on your coordinate choice; "negative acceleration" means acceleration opposite the chosen positive direction and will reduce the speed when it is opposite the velocity.)