$v(n)=w-b+a^3$

Whare $-$ that the moment when the marble first como iato contact widh the palty. As the matile exits the region covered in putry, the mattics instantaneous accelcrition goes $10$ zros.

For $u=2\mathrm{.}40\frac{m}{s},B=4\mathrm{.}1\mathrm{.}5\frac{m}{s^2},$ and $c=6\mathrm{.}70t\frac{r}{{?}^4},$ ealcelale the length $x$ of the track itan is covered with polty

$x=$