1. The problem statement, all variables and given/known data A car traveling at 20 m/s stops in a distance of 50m. Assume that the acceleration is constant. The coefficients of friction between a passenger and the seat are u_s = 0.5 and u_k = 0.3. Will a 70 kg passenger slide off the seat if not wearing a seat belt? Prove it. 2. Relevant equations f_s(max) = u_s*N x_f = x_i + v_i*t + 1/2 at^2 3. The attempt at a solution I used the first equations to find that f_s(max) is equal to 343N and the second to find that the acceleration is -4m/s^2. I don't know where to go from here. Please, I need this for class tomorrow morning! Thanks.