Solve the all parts of given problem:
Problem: A parachutist relies on air resistance (mainly on her parachute) to decrease her downward velocity. She and her parachute have a mass of 56.5kg and air resistance exerts a total upward force of 640N on her and her parachute.
Part A: Draw a free-body diagram for the parachutist.
Part B: Calculate the net force on the parachutist.
Part C: Is the net force upward or downward?
Part D: What is the magnitude of the acceleration of the parachutist?
Part E: What is the direction of the acceleration?
I need help to determine the magnitude of the acceleration of the parachutist.