13. A 5.200-kilogram steel block is launched across a frictionless surface at 2.755 m/s, towards a 0.416-kilogram steel block initially at rest. After impact, the smaller block is directed up a rough ramp inclined at an angle of 15.0° above the horizontal. The coefficient of static friction between the ramp and the block is µs = 0.308, but the kinetic friction coefficient is to be determined. (i) What are the velocities of each block after the collision? (ii) If there was no friction on the ramp, to what height (vertically) would the smaller block rise along the ramp? (If you do not trust your answer to (i), you may use assumed values of v, = 2.347 m/s and v2 = 5.102 m/s.) (iii) As it is, however, the ramp is "rough" so the block only rises to a height of 0.654 m above its starting position. How much work did kinetic friction do on the block?

13. A 5.200-kilogram steel block is launched across a frictionless surface at 2.755 m/s, towards a 0.416-kilogram steel block initially at rest. After impact, the smaller block is directed up a rough ramp inclined at an angle of 15.0° above the horizontal. The coefficient of static friction between the ramp and the block is µs = 0.308, but the kinetic friction coefficient is to be determined. (i) What are the velocities of each block after the collision? (ii) If there was no friction on the ramp, to what height (vertically) would the smaller block rise along the ramp? (If you do not trust your answer to (i), you may use assumed values of v, = 2.347 m/s and v2 = 5.102 m/s.) (iii) As it is, however, the ramp is "rough" so the block only rises to a height of 0.654 m above its starting position. How much work did kinetic friction do on the block?