About: http://webisa.webdatacommons.org/149090470

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	If you want the ball to land in the opponent's court, however, there is an upper limit on the initial ball speed for a given contact point.
http://www.w3.org/ns/prov#wasQuotedFrom	physicsforums.com