Question

A parachutist of mass 75kg descends with an acceleration of 8 m/s2. What is the upward force exerted by the air on the parachutist?
How would you go about finding this answer?

Answer 1

Forces acting are :-
a) Weight, Wg
b) upward air resistance, Fr

F.net = Wg - Fr
=> 75*9.8 - Fr = 75*8
=> Fr = 75*(9.8 - 8)
=> Fr = 135 N

Answer 2

drfigure out the forces ====find the net thats all just like shubham has done