Assertion: roller coaster's speed | /r/AtLocation | the limit
Facets:
Source sentences:
text: The slowest speed that an (unattached) coaster can go around a loop upside down is at the limit at which the centripetal force is providedentirely by gravity.
text: The slowest speed that an (unattached) coaster can go around a loop upside down is at the limit at which the centripetal force is provided entirely by gravity.