Hello, I have to write a fortran program to computer the flight traj of a projectile. I am given dt, initial velocity, angle of departure, initial height, and gravity. I am also given the aerodynamic drag factor (A) values. I have been given the equations, but I am confused as to what the letters stand for.(adsbygoogle = window.adsbygoogle || []).push({});

A = k/m

dVx/dt = -AVNx

dVy/dt = -g - AVNy

Fd = kN^2

I have other eqns, but my main question is .. what is the N referring to? The normal? Wouldn't Nx = mass * accel in x direction? and Ny = mass * accel in y dir ? I am not given the mass, though. And what is k in A = k/m (where A = aero drag factor) ? Thanks!

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# Homework Help: Fortran prog - flight traj of projectile

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