Problem $2\mathrm{.}12\mathrm{.}3$

An open container of oil rests on the flatbed of a truck that is traveling along a horuzontal road

at $55$ mi$/$hr As the truck slows uniformly to a complete stop in $5$ s $,$ what will be the slope of

the oil surface during the period of constant deceleration?

Hint:

$a,-\frac{\text{f}\text{i}\text{n}\text{a}\text{l}\text{v}\text{e}\text{l}\text{o}\text{c}\text{i}\text{n}\text{g}-\text{i}\text{n}\text{i}\text{t}\text{a}\text{l}\text{v}\text{e}\text{l}\text{o}\text{s}\text{i}\text{t}\text{y}}{\text{t}\text{i}\text{m}\text{e}\text{i}\text{n}\text{t}\text{e}\text{r}\text{v}\text{a}\text{l}}$