CREATE TABLE table_79790 ("Vehicle Flight #" CLOB, "Date" CLOB, "Pilot" CLOB, "Velocity  ( km/h ) " FLOAT, "Altitude  ( m ) " FLOAT)

on august 16, 1963, what is the velocity?
SELECT SUM("Velocity (km/h)") FROM table_79790 WHERE "Date" = 'august 16, 1963'
SELECT SUM("Velocity (km/h)") FROM "table_79790" WHERE "Date" = 'august 16, 1963'