(Solved): a physics student in a hot air balloon ascends vertically in the air. Consider the following four fo ...

a physics student in a hot air balloon ascends vertically in the air. Consider the following four forces that arise in this situation. A physics student in a hot air balloon ascends vertically in the air. Consider the following four forces that arise in this situation: \( \mathrm{F}_{1}= \) weight of the hot air balloon \( \mathrm{F}_{3}= \) force of the student pulling on the earth \( \mathrm{F}_{2}= \) weight of the student \( \mathrm{F}_{4}= \) force of hot air balloon pulling on the student 5.1 Which of these forces form an "action-reaction" pair that obeys Newton's third law? Explain. 5.2 Which of these forces act on the student? Explain. 5.3 What must be true of the relationship between (some or all of) these force magnitudes if (a) the balloon was ascending at constant speed; (b) the balloon was accelerating upwards?