ON 4 The 12-Mg "jump jet" shown in Fig. 4a is capable of taking off vertically from the deck of a ship. If its jets exert a constant vertical force of 150 kN on the plane, determine its velocity at...

Extracted text: ON 4 The 12-Mg "jump jet" shown in Fig. 4a is capable of taking off vertically from the deck of a ship. If its jets exert a constant vertical force of 150 kN on the plane, determine its velocity at time t = 6 s, starting from rest. Neglect the loss of fuel during the lift. a 150KN Fig. 4a