[[kinesmatics]] $v_{{avg}}=\Delta d / \Delta t$ $a_{{avg}}= \Delta v / \Delta t$ $d=d_2-d_1$ $d=v_1t+\frac{1}{2}at^2$ $d=v_2t-\frac{1}{2}at^2$ $d=\frac{1}{2}(v_1+v_2)*t$ $v_2=v_1+at$ $v_2^2=v_1^2+2ad$