At a time t $=3\mathrm{.}50$ s$,$ a point on the rim of a wheel with a radius of $0\mathrm{.}190$ mm has a tangential speed of $50\mathrm{.}0$ m$/$sm$/$s as the wheel slows down with a tangential acceleration of constant magnitude $10\mathrm{.}1$ m$/$s$2$m$/$s$2.$