Variation of Drag Force

Drag force vs Velocity

import matplotlib.pyplot as plt

c_d = 0.8

a = 0.1

rho =1.2

velocities = [1,2,4,4,5]

drag_force = []

for velocity in velocities:
    drag_force.append(0.5*c_d*rho*a*velocity**2)

plt.plot(velocities,drag_force)
plt.show()

Drag force vs Drag Coefficent

Drag Coefficents of different Objects

#0.47 smooth sphere
#1.15 man(upright position)
#1.28 flat plate perpendicular to flow(2D)
#0.005 turbulent flat plate parallel to the flow
#0.23 -- Tesla model 3 and Audi A4
#0.26 BMW i8

drag_force = []
c_d = [0.47,1.15,1.28,0.005,0.23,0.26]
v = 10

for drag_coeff in c_d:
    drag_force.append(0.5*rho*a*velocity*drag_coeff)
    
plt.plot(c_d,drag_force)
plt.show()