Assertion: acceleration | /r/UsedFor | refer to the change
Facets:
value: within a certain period of time
type: TEMPORAL
value: in velocity of a moving object
type: OTHER
Source sentences:
text: Acceleration refers to the change in velocity of a moving object within a certain period of time, either to a slower or faster pace, while deceleration exclusively refers to the negative acceleration (or slowing down) of an object.