LEC4

• Basically solved a lot of problems.
• Used equations of motion in the context of vertical motion.
• Ignoring air resistance, vert motion has constant acceleration $g$.

$$\begin{array}{r}y=u_{y}t+\frac{1}{2}g{t}^2\\ v_y=u_y+gt\end{array}$$

(choice of coordinates will affect $\pm$ of $g,y,v_y$)