Final Velocity.... Problem: A hockey puck is given an initial velocity of 40.0 m/s along the ice. Find the speed of the puck 1.00 s later if the coefficient of kinetic friction (U) between puck and ice is 0.600. (HINT: The result is independent of the mass of the puck.) My solution: 1. sum of forces in y direction = N - W = 0 2. sum of forces in x direction = p - f = (a) p - (U)(N) = a p - (0.600)(g) = a p - 5.88 = a ( I need to know what "a" is in order to solve for final velocity but I am doing something wrong... please help) PS. is my body diagram correct?