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A rock with mass m = 2.60 kg falls from rest in a viscous medium. The...

A rock with mass m = 2.60 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 19.8 N (a combination of gravity and the buoyant force exerted by the medium) and by a fluid resistance force f=kv, where v is the speed in m/s and k = 2.69 N×s/m

a)Find the initial acceleration a0.

b) Find the acceleration when the speed is 3.50 m/s .

c)Find the speed when the acceleration equals 0.1a0.

d)Find the terminal speed vt (the maximum speed, when the fluid resistance is in euqlibrium with the weight and buoyant force).

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still any doubts feel free to ask at least before giving downvote hope you understand my concerns

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