x-axis → time (s)[br]y-axis → velocity (m/s)[br][br]m → mass (kg)[br]g → acceleration due to gravity (g)[br]r → density of the fluid (kg/(m^3))[br]A → projected area (m^2)[br]C → coefficient of drag[br]k → coefficient of resistance[br]v → velocity (m/s)[br]vt → terminal velocity (m/s)[br]t → time (s)