Changes the center of mass of an object smoothly during the given time (in seconds). A time of zero (or using the alternative syntax) means an immediate change.
The larger the mass is, the easier a unit will physically fatigued
N/A
aircraft
The larger the mass is, the more sensitive an aircraft will react to joystick, vice versa.
Aircraft slant due to center change accordingly, and the position of the camera view will be altered relatively at the same time. (3rd person view)
vehicle
The larger the mass is, the slower a vehicle drives (Ships will sink), vice versa. (Land vehicle performs like a bouncing ball while ships accelerated pretty speedy.)