A soldier jumps from a plane and opens his parachute when his velocity reaches the terminal velocity V_T. The parachute slows him down to his landing velocity of V_F. After the parachute is deployed, the air resistance is proportional to the velocity squared (i.e., F = kV²). The soldier, his parachute, and his gear have a total mass of m. Show that k = mg/V²_Fand develop a relation for the soldier??s velocity after he opens the parachute at time t = 0.