In the figure a block slides along a path that is without friction until the block reaches the section of length L = 0.71 m, which begins at height h=1.6 m, on a ramp of angle 0=29. In that section the coefficient of kinetic friction is 0.450. The block passes through point A with a speed of 8.1 m/s. If the block can reach point B (where the friction ends), what is its speed there, and if it cannot, what is its greatest height above A? 111 Number i e Unit m/s