diff --git a/bounce_cpp/bounce_cpp.vcxproj b/bounce_cpp/bounce_cpp.vcxproj
index 1e0ccf0..b5f6947 100644
--- a/bounce_cpp/bounce_cpp.vcxproj
+++ b/bounce_cpp/bounce_cpp.vcxproj
@@ -43,13 +43,13 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset>v145</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -110,6 +110,8 @@
     <Link>
       <SubSystem>Windows</SubSystem>
       <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>gdiplus.lib;
+winmm.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
diff --git a/bounce_cpp/hyrax_exe-TeX_07_05_2026.pdf b/bounce_cpp/hyrax_exe-TeX_07_05_2026.pdf
new file mode 100644
index 0000000..6e2b793
Binary files /dev/null and b/bounce_cpp/hyrax_exe-TeX_07_05_2026.pdf differ
diff --git a/bounce_cpp/physics.cpp b/bounce_cpp/physics.cpp
index e39f6e9..03784f8 100644
--- a/bounce_cpp/physics.cpp
+++ b/bounce_cpp/physics.cpp
@@ -1,13 +1,13 @@
 /*
 Preamble:
     These exact physics calculations are documented in a TeX Document soon to be in the source tree of
-    the project. (as of 06/05/26 not in the tree)
+    the project. (as of 06/05/26 not in the tree; as of 07/05/26 there is a TeX doc. file name: hyrax_exe-TeX_07_05_2026.pdf)
 
     The physics calculations are done using a Semi-Implicit Euler integrator. (big words)
 
     | Parameter          | Value  | Description                                    | Mapped code identifier       |
     |--------------------|--------|------------------------------------------------|------------------------------|
-    | `GRAVITY`          | 1200.0 | Downward acceleration (px s⁻²)                  | `GRAVITY` (constant)         |
+    | `GRAVITY`          | 1200.0 | Downward acceleration (px s^-2)                  | `GRAVITY` (constant)         |
     | `RESTITUTION`      | 0.6    | Energy retention after bounce                  | `RESTITUTION` (constant)     |
     | `AIR_DRAG`         | 0.999  | Velocity multiplier per frame                  | `AIR_DRAG` (constant)        |
     | `GROUND_FRICTION`  | 0.8    | Horizontal speed reduction on ground           | `GROUND_FRICTION` (constant) |
diff --git a/bounce_cpp/physics.h b/bounce_cpp/physics.h
index 3e8187b..092db95 100644
--- a/bounce_cpp/physics.h
+++ b/bounce_cpp/physics.h
@@ -5,8 +5,8 @@
 class physics
 {
 public:
-	scd GRAVITY = 1200.0;
-	scd RESTITUTION = 0.6;
+	scd GRAVITY = 2500.0;
+	scd RESTITUTION = 0.9;
 	scd AIR_DRAG = 0.999;
 	scd GROUND_FRICTION = 0.8;
 	scd REST_THRESHOLD = 5.0;