Robert constructs the apparatus shown and slides a block down a slope that is without friction until the block reaches the section, L, of length 1.85 m, which begins at height h2 = 2.0 m on a ramp of angle 30.0°. In that section, the coefficient of kinetic friction is 0.70. He shoots the block down the right side of the apparatus such that the block passes through point A with a speed of 6.5 m/s and is at a height h1 = 2.5 m. What is the speed of the block at point B (right where the friction ends?