9. Exercises

Förberedande Mekanik

Version från den 14 september 2009 kl. 13.42; Ian (Diskussion | bidrag)
Hoppa till: navigering, sök
       Theory          Exercises      

Exercise 9.1

A parachutist is falling vertically at a constant speed. He has mass 80 kg. Find the magnitude of the upward force acting on the parachute.