The following statements regarding momentum are true:
- It is the product of mass and velocity (m*v).
- The greater the mass or velocity, the greater the momentum.
- The less the mass or velocity, the less the momentum.
- The symbol for momentum is P.
The other statements, "the formula is unknown" and "Is not a vector quantity," are false. Momentum is a known formula (p = mv) and is indeed a vector quantity, as it has both magnitude and direction.