A seat attachable to a floor of a vehicle, the seat comprising: a seat frame movable between a first position and a second position; and a mounting assembly attached to the seat frame and configured to be secured to the floor, the mounting assembly including: a front connection immovably fixable to the floor and having a first receiver ; a first longitudinal member slidable in the first receiver between a retracted position and an extended position; a second longitudinal member attached to and movable with the first longitudinal member ; and a second receiver slidable along the second longitudinal member between a retracted positon and an extended position, the seat frame being attached to the second receiver , wherein, when the seat frame is in the first position the first longitudinal member and the second receiver are both in the retracted positions, wherein, when the seat frame is in the second position the first longitudinal member and the second receiver are both in the extended positions, characterized in that : the mounting assembly further comprises: a track attachable to the floor, the front connection being fixed to the track ; and a rear connection movable along the track in relation to the front connection . a seat frame movable between a first position and a second position; and a mounting assembly attached to the seat frame and configured to be secured to the floor, the mounting assembly including: a front connection immovably fixable to the floor and having a first receiver ; a first longitudinal member slidable in the first receiver between a retracted position and an extended position; a second longitudinal member attached to and movable with the first longitudinal member ; and a second receiver slidable along the second longitudinal member between a retracted positon and an extended position, the seat frame being attached to the second receiver , wherein, when the seat frame is in the first position the first longitudinal member and the second receiver are both in the retracted positions, wherein, when the seat frame is in the second position the first longitudinal member and the second receiver are both in the extended positions, a front connection immovably fixable to the floor and having a first receiver ; a first longitudinal member slidable in the first receiver between a retracted position and an extended position; a second longitudinal member attached to and movable with the first longitudinal member ; and a second receiver slidable along the second longitudinal member between a retracted positon and an extended position, the seat frame being attached to the second receiver , wherein, when the seat frame is in the first position the first longitudinal member and the second receiver are both in the retracted positions, wherein, when the seat frame is in the second position the first longitudinal member and the second receiver are both in the extended positions, characterized in that : the mounting assembly further comprises: a track attachable to the floor, the front connection being fixed to the track ; and a rear connection movable along the track in relation to the front connection . a track attachable to the floor, the front connection being fixed to the track ; and a rear connection movable along the track in relation to the front connection . <EOS>