(Answered) Please help must show worka what is the net force acting on

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Please help. Must show work.

a) What is the net force acting on an object with a mass of 10 kilograms, falling at a constant downward velocity of 15 meters per second (15 m/s)?

b) What is the net force acting on an object with a mass of 10 kilograms, falling with a downward acceleration of 15 meters per second squared (15 m/s²)?

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