[单选题]
During a hockey game, a puck is given an initial speed of 10 m/svb4d4x-0mmo-4xx t pw . It (kc 6jn-rd0zd .ys)c sslides 50 m on the ice before it stops. What is the coefficient of kinetic friction kj.yr)d d(c0c zss6-n between the puck and the ice?
