vault backup: 2025-09-05 20:35:21

education/physics/PHYS2210/Unit 1.md

@@ -30,10 +30,9 @@ $$a_{\text{instant}} = a = \frac{dv}{dt} = \frac{d}{dt} \frac{dx}{dt} = \frac{d^
 3. $x = x_0 + v_0 t + \frac{1}{2} a t^2$  - Use when missing $v$
 4. $v^2 = v_0^2 + 2a(x - x_0)$  - Use when missing $t$ 
 
-
-Kinematics problems have a *start* and an *end* of the motion.
-
-| Initial        | Final |
+(Actually useful equations)
+$$ t = \frac{v_f - v_i}{a} $$
+$$s = v_it + \frac{1}{2}at^2 $$
 | -------------- | ----- |
 | $t_0$          | $t$   |
 | $v_0$          | $v$   |