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question regarding motion of a parachutist?
When a parachutist opens his parachute there is a decrease in speed (deceleration) since air resistance increases and resultant acts upwards. Why is it so that the pararchutist doesnt begin to move upwards? how does he reach terminal velocity? does the air resistance decrease? How? thankyou :)
2 Answers
- sojsailLv 75 years agoFavorite Answer
It is true that the resultant force is upwards when the chute first opens. The chutist's rate of descent decreases because of that. But air resistance changes significantly as speed changes. The weight stays constant but the air resistance decreases as speed decreases. A balance soon develops so that the resultant force is zero. The descent is constant velocity the rest of the way down.
