Assertion: coaster's velocity | /r/HasProperty | all-important concepts
Facets:
value: at the top of the circle
type: LOCATION
Source sentences:
text: Speed, velocity and acceleration are all-important concepts to understand when building a roller coaster.
text: At the top of the circle, only the velocity in the vertical direction is relevant because it is in the direction of the centripetal force at that moment (since the radius is vertical).
text: Speed, velocity and acceleration are all-important concepts to understand when building a roller coaster.