3/128 A small rocket-propelled test vehicle with a total mass of 100 kg stars from rest at A and moves with negligible friction along the track in the vertical plane as shown. If the propelling rocket exerts a constant thrust T of 1.5 kN from A to position B where it is shut off, determine the distance s which the vehicle rolls up the incline before stopping. T/he loss of mass due to the expulsion of gases by the rock is small and may be neglected.