added HW 2

HW2/README.md

@@ -0,0 +1,30 @@
+# Homework #2
+## due 2/3/17
+
+1. Now that you have created your own repository, 'homework_1', that has a README.md file.
+Create a new file in this repository called `setdefaults.m`. This file is a matlab/octave
+script that will set default plotting parameters. In this file, add the following lines:
+
+```matlab
+set(0, 'defaultAxesFontSize', 16)
+set(0,'defaultTextFontSize',14)
+set(0,'defaultLineLineWidth',3)
+```
+
+Commit the changes to your repository. 
+
+2. Clone your 'homework_1' repository to your own computer. Create a function,
+`projectile.m` that will calculate the location of an object with an initial velocity. The
+function inputs are v_mag (initial speed), theta (initial angle). The output is the height
+of the object 2.37 m from its starting position. Assume g=9.81 m/s^2 and its initial
+height is 1.72 m. 
+
+```matlab
+>> h=projectile(v_mag,theta)
+
+  h= 1
+```
+
+In addition to the output of `h`-height at 2.37 m-plot the path of the object from its
+initial position its position at 2.37 m away from the start. *Note: use your
+`setdefaults.m` to set the plot defaults before outputting the result.*