Which type of alternate air source does not necessarily require the donor to give up his primary second stage? Technical diving configuration. Alternate-air-source inflator. Conventional alternate-air-source second stage. None of the above

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.