Hello i am doing an exercise that states: 

A 3000 lb  vehicle travelling on a road at 100 ft/sec requires a force equal to its mass times its acceleration to stop ( F = ma).

The acceleration is given by

a=  (v_o^2-v_i^2)/2d 

Where  vi = 100 ft/sec

 vo = 0 ft/sec.

 Write a program that will calculate the retarding force needed to stop the car at distances of 10, 20, 30, 40, 50, …, 1000 ft. Display the distance value and the corresponding retarding force in tabular form. The units of force are Newtons (N). Your solution must include a user-defined function that returns the force and takes as input initial and final velocity and distance.

double force(double velocityInitial, double velocityFinal, double distance, double mass);

I have tried the following: 

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

    double force(double velocityInitial, double velocityFinal, double distance, double mass);

int main()
{

    double forceFormula;
    int distance, mass, acceleration;

    forceFormula = mass * acceleration;

    printf("\nDistance:\t\tForce in Newtons:\n"
        "------------------------------------------\n");
    printf("%d\t\t\t%.2lf\n", distance, forceFormula);
    printf("------------------------------------------\n");

    return 0;
}

    double force(double velocityInitial, double velocityFinal, double distance, double mass)
    {
        velocityInitial = 100;
        velocityFinal = 0;
        mass = 3000;

        double acceleration, forceFormula;

            for( distance = 10; distance <= 1000; distance += 10)
            {

               acceleration = ((velocityFinal * velocityFinal) - (velocityInitial * velocityInitial))/ 2 * distance;

               forceFormula = mass * acceleration;
            }

    return forceFormula;

}
 

I am not sure where it is that I am making a mistake, if its in the variables, the function definition... I really appreciate the help, thanks.