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I need help with some questions -- additional physics

They are:

1) An object is released in a fluid

Describe:

A) the resultant force on it initially
B) the weight of the object and the frictional force on it before it reaches its terminal velocity
C) its acceleration after it reaches its terminal velocity
D) the resultant force on it when it moves as its terminal velocity

3) A parachutist of mass 70kg supported by a parachute of mass 20kg reaches a constant speed
A) explain why the parachutist reaches a constant speed

***Could you also provide an explanation as well as the answers because i am really stuck