An apple with a mass of 0.2kg is thrown up vertically, and the air resistance in the process of rising and falling is 1n

It is known that: M = 0.2kg, f = 1n; find: the resultant force on the apple. The gravity on the apple: g = mg = 0.2kg × 9.8n/kg = 1.96n, the direction of gravity is vertical downward; (1) when the apple rises, the resistance is vertical downward, the resultant force on the apple: F = G + F = 1.96n + 1n = 2.96n, the direction is vertical downward; (2) when the apple

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1. There is an apple of 2n weight. By gravity and air resistance, we can calculate the resultant force F1 and F2 when it rises and falls in the process of throwing upward Why F1 = G + F resistance? F2 = G-F resistance?
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