Assertion: coaster's type | /r/HasProperty | balanced with gravity
Facets:
value: correctly
type: MANNER
Source sentences:
text: Negative vertical forces (a type of force that, if balanced with gravity correctly, will give the sensation of weightlessness), a force on a roller coaster in which the car crests a hill or similar element, and the riders are pushed out of their seat from centrifugal force.