However, the formulation of energy is based on mass times velocity squared while the formulation of momentum is based on mass times velocity. In this case the momentum of the system defined as both ca...However, the formulation of energy is based on mass times velocity squared while the formulation of momentum is based on mass times velocity. In this case the momentum of the system defined as both cars is conserved because there overall momentum adds up to zero both before and after the collision. Momentum is based on mass and velocity, and energy can be formulated to also be based on mass and velocity.
