#include <stdio.h>
#include <math.h>

int main()
{
  double t, a, F, uk;
  
  printf("C output\n");
  printf("Chapter 6\n");
  printf("Problem 5\n");

  // 0 = 20 - a * t
  // a = 20 / t
  // 50 = 20 * t - 0.5 * a * t * t
  // 50 = 20 * t - 0.5 * (20 / t) * t * t
  // 50 = 20 * t - 0.5 * 20 * t
  // 50 = 20 * t - 10 * t
  // 50 = 10 * t
  // t = 5
  // a = 20 / 5
  // a = 4
  // F = m * a
  // F = (0.25 / 32.2) * 4
  // F = 0.031055
  // 0.031055 = uk * 0.25
  // uk = 0.12422

  printf("Part a\n");
  t = 5.0;
  a = 4.0;
  F = (0.25 /32.2) * a;
  printf("Force = %8.4f\n",F);
  printf("Part b\n");
  uk = F / 0.25;
  printf("uk = %8.4f\n",uk);

  

}