Find $a$ given $s=\frac12at^2$ and the values of $s$ and $t$ I can't figure out how to do this type of math problem ... 

Not even sure what to search for on google to find proper info to learning it. sorry for the vague question. 

Given that $s=\frac{1}{2}at^2$ and that $s=2376$ and $t=12$ make the equation true, that implies that:
$$2376=\frac{1}{2}\cdot a \cdot (12)^2$$
From here, it is simple algebra to isolate $a$ to find its value.
Try multiplying both sides by two and dividing both sides by $12^2$...
