A student became lost during a solo cross-country flight. While attempting to locate the aircraft on radar, ATC asked, "What was your last known position?" Student: "When I was number one for takeoff." A DC-10 had come in a little hot and thus had an exceedingly long roll out after touching down. San Jose Tower Noted: "American 751, make a hard right turn at the end of the runway, if you are able. If you are not able, take the Guadeloupe exit off Highway 101, make a right at the lights and return to the airport."