//Given that mu_k = 0.6 d = 290 //in meter g = 9.8 //in m/s^2 v_final = 0 //Sample Problem 6-1 printf("**Sample Problem 6-1**\n") //using newton's 3rd equation of motion ac = - mu_k * g //due to friction hence a negative sign v_initial = sqrt(v_final^2 - 2 * ac * d) printf("The inital velocity of that car would have been %f m/s", v_initial)