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//Example 11-6 Effect of Spin on Tennis Ball
m = 0.057 //mass of the tennis ball [kg]
D = 6.37 //diameter of the ball [cm]
V = 72 //speed of ball [km/h]
N = 4800 //backspin given to ball [rpm]
P = 1 //air pressure [atm]
T = 25 //temperature of air [C]
nu = 1.562 * 10**-5 //kinematic viscosity of air at 25 C [m^2/s]
g = 9.81 //gravitational acceleration [m/s^2]
R = 287 //gas constant for air [J/kg.K]
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