updated readme week 2

week2/README.md

@@ -17,10 +17,22 @@ Learn to apply physics forces vs scripted movements
 
 Collision detection and reaction
 
-### Development Exercise 1 - Cannon
+### Development Exercise 1 - Bumping
 
-Make a particle canon for you player using physics forces
+In this first exercise we will modify the player character to register collisions with RigidBodies and use forces for reactions.
+
+### Exercise 2 - Force Push Attack
+
+Expand on the understanding of impulses by creating a force-push melee attack.
+
+### Exercise 3 - Cannon
+
+This exercise teaches:
+* Dynamic instantiation
+* Removing bodies from the game world
+* Manipulating the object's transform
+* Applying impulses to rigid bodies
+
+Make a projectile canon for your player using physics forces
 
-### Exercise 2 - Jump Control
 
-Enhance the jump of your player, including ground detection and “double jump” control