[问答题]
A small block of mass m is given an v2j z:8qad(s qn y4g+;tq em5hinitiamf.40 v rqepxj(*d o*;iylf; ql speed $ v_{0} $ up a ramp inclined at angle $\theta $ to the horizontal. It travels a distance d up the ramp and comes to rest. Determine a formula for the coefficient of kinetic friction between block and ramp.
