Five of the 13 Highlanders who scored made at least three 3-pointers, and NJIT (12-16) tied the third-highest Division I total this season with 18.
The Highlanders made 50 percent from long range (18 of 36). They shot 12 of 20 from behind the arc in the first half, and led 55-28 at the break.
The Highlanders scored 23 fast-break points, to Longwood's zero.
The Lancers were outrebounded 43-35 and shot just 29 percent from the field (18 of 62).