1) As soon as you jump the weight will be greater than the drag which causes you to gain speed as you fall
2) After falling for a while you reach terminal velocity (travelling at a constant seed, the fastest you will go) because the drag is equal to the weight
3) Once you open the parrachute the drag is larger than the weight because there is more air resistance so you begin to slow down
4) Eventually the larger drag will equal the weight and you will gain a new terminal velocity that is much slower and safer
Always remember that when travelling at a constant speed the forces are balanced
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