You are running 8 m/s with a 1.5 m/s headwind. the air density is 1.2 kg/m3. the coefficient of drag is 1.1. your surface area is 1.8 m2.
a) what is the force of drag acting on you?
b) you have a mass of 70 kg and run 100m at this pace. approximately, how much force, in total, did you have to apply to do this?
c) if you have to produce 40 n of force to overcome drag, what is the wind speed now?
d) how much total force was needed this time?
