Push in local space adjusts the velocity of an object by a vector in meters per second. The direction of the push is based on the rotation of the object. Each coordinate of the push vector applies to the respective axis of the object. For instance, the X of the vector applies a push in the X direction of the object.

Every 0.1 seconds, the rocket’s velocity increases 1 meter per second in the direction of the rocket’s y-axis. The y-axis of the rocket needs to point up for the rocket to accelerate upwards.