From 712c7abb9d53e2ffc3e5a095f277cf6f91389952 Mon Sep 17 00:00:00 2001
From: eggy <eggyrules@gmail.com>
Date: Wed, 14 Oct 2020 20:53:01 -0400
Subject: [PATCH] phys: add stacked vectors

---
 docs/sph3u7.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/docs/sph3u7.md b/docs/sph3u7.md
index 098abf2..827fe01 100644
--- a/docs/sph3u7.md
+++ b/docs/sph3u7.md
@@ -377,6 +377,7 @@ Force diagrams must include:
  - The object as a point
  - Either $\vec{a}=0$ or a squiggly arrow labeled $\vec{a}$ in the direction of acceleration
  - All contact forces with their **subscript-labeled** vectors pointing away from the object and their lengths representative of their magnitude relative to the other vectors
+	- If there are multiple forces acting on an object in the same direction, those vectors should be stacked
  - Weight as a vector following the rules above
 
 ### Balanced and unbalanced forces