Physics - W.E.P. Question with Solution | TestHub

A small block slides along a path which is smooth until the block reaches the section of length $\mathrm{L}=3\mathrm{m}$, which begins at height $\mathrm{h}=3\mathrm{m}$ on a flat incline of angle 37°, as shown in the figure. In that section, the coefficient of kinetic friction is 0.50 . The block passes through point A with a speed of $\sqrt{136}\mathrm{m}/\mathrm{s}$. Find the speed (in $\mathrm{m}/\mathrm{s}$ ) of the block as it passes through point B where the friction ends. (Assume no lose of mechanical energy at the corner of track) $\mathrm{g}=10\mathrm{m}/{\mathrm{s}}^2$