1. Assume that air resistance is proportional to speed. A parachutist falls from rest. If he did not open his parachute, he would reach a terminal velocity of 90 m/s. With an open parachute, he reaches a terminal velocity of 10 m/s. He opens his parachute 20 s after he started falling. Calculate (a) The distance already fallen at the moment when he opens his parachute; (b) The total distance fallen 40 s after he started falling.
1. Assume that air resistance is proportional to speed. A parachutist falls from rest. If he did not open his parachute, he would reach a terminal velocity of 90 m/s. With an open parachute, he reaches a terminal velocity of 10 m/s. He opens his parachute 20 s after he started falling. Calculate (a) The distance already fallen at the moment when he opens his parachute; (b) The total distance fallen 40 s after he started falling.
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![1. Assume that air resistance is proportional to speed. A parachutist falls from rest. If he did not open his
parachute, he would reach a terminal velocity of 90 m/s. With an open parachute, he reaches a terminal
velocity of 10 m/s. He opens his parachute 20 s after he started falling. Calculate (a) The distance already
fallen at the moment when he opens his parachute; (b) The total distance fallen 40 s after he started falling.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0328e502-385d-4aae-bcfc-319b6dd296fa%2Ffb118e01-5266-42ad-8582-0a7bd4363458%2Fzob4b8v_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Assume that air resistance is proportional to speed. A parachutist falls from rest. If he did not open his
parachute, he would reach a terminal velocity of 90 m/s. With an open parachute, he reaches a terminal
velocity of 10 m/s. He opens his parachute 20 s after he started falling. Calculate (a) The distance already
fallen at the moment when he opens his parachute; (b) The total distance fallen 40 s after he started falling.
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