A 70-kg soldier on a secret mission has to parachute from an airplane over the desert. It takes five seconds for him to release his parachute after he jumps. Taking the mass of the parachute as \(5 \mathrm{~kg}\), estimate the force acting on the soldier as he releases the parachute. The diameter of the parachute is \(2.0 \mathrm{~m}\). Neglect drag on the soldier's body prior to the opening of the parachute. The air is at \(20^{\circ} \mathrm{C}\).