About: http://webisa.webdatacommons.org/217469921

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	So to determine your acceleration I compare your motion with that of a freely falling observer who is (momentarily) next to you.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com