This insight is a model of a parachute falling through the air. The objective is to determine--by comparing to actual data of a falling parachute--whether the drag coefficient is proportional to the velocity of the parachute, or it's square.

This differential equation model simulated the motion of a falling parachute. In particular, the mass of the parachute and velocity are used to calculate a drag force against the downward acceleration of the parachute towards the ground.

van der Pol equation

This is the file made to answer question 2 for the Modeling Project 1. Population is in units of [i]: individuals, R in units of [Months^-1] = Months (inverser), and that is equal to the differential equation for the population of people in time change of months. THIS WAS DONE OUTSIDE OF CLASS INITIALLY.