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A falling object obeys the differential equation dz:_ _ mdtmg T'U where m is the mass of the obiect, 'v is the speed, 7'?) accounts for the air resistance and g = 9.8?71/32 is the gravitational constant. A skydiver weighing 80 kg {including equipment} jumps from a height of 1 500 meters. When the parachute is closed, the air resistance is 0.751;. After 10 seconds, the parachute opens and the air resistance is then 121). A. What is the speed when the parachute opens? B. How far has the skydiver fallen when the parachute opens? C. For how long time will the skydiver fall? D. Which speed will the skidiver have when reaching the ground? E. Plot the graph of the speed of the skydiver as a function of time from jumping until reaching the ground