From: Andrew Lorimer <andrew@lorimer.id.au>
Date: Thu, 30 Aug 2018 12:33:36 +0000 (+1000)
Subject: kinematics
X-Git-Tag: yr11~52^2~2
X-Git-Url: https://git.lorimer.id.au/notes.git/diff_plain/fd5772af9f07c54713b1f4ad1240a89d2b066dec

kinematics
---

diff --git a/spec/calculus.md b/spec/calculus.md
index ddd9011..91440e5 100644
--- a/spec/calculus.md
+++ b/spec/calculus.md
@@ -217,13 +217,11 @@ To find stationary points of a function, substitute $x$ value of given point int
 
 $${dV \over dt} = {\operatorname{change in volume} \over \operatorname{respect to time}}$$
 
-`     |->--diff-->--| |-->--diff-->--|
-displacement    velocity    acceleration
- |--<-antidiff-<---| |--<-antidiff-<-|`
-
-**displacement $x$** - change in position  
-**velocity $v$** - change in displacement  
-**acceleration $a$** - change in velocity
+**position $x$** - distance from origin or fixed point  
+**displacement $s$** - change in position from starting point (vector)  
+**velocity $v$** - change in position with respect to time  
+**acceleration $a$** - change in velocity  
+**speed** - magnitude of velocity
 
 $$v_{\operatorname{avg}}={\Delta x \over \Delta t}={{x_2 - x_1} \over {t_2 - t_1}}$$
 $$\operatorname{speed}_{\operatorname{avg}}={\Delta v \over \Delta t}$$