//constants - variables whoes values do not change
const float GRAVITY = 9.8;


///////////////////////////////////////////////
#include<iostream>
#include<math.h>
#include<iomanip>

using namespace std;

void main ()
{
	//constants - variables whoes values do not change
	const float GRAVITY = 9.8;

	double time = 0;
	double height;
	double initialHeight;
	double speed = 0;
	double averageSpeed = 0;

	cout.precision(3);
	cout.setf(ios_base::fixed);

	cout << "Initial height? ";
	cin >> initialHeight;
	height = initialHeight;

	cout << "Time      Height    Speed     Avg.Speed" << endl;
	cout << setw(10) << time;
	cout << setw(10) << height;
	cout << setw(10) << speed;
	cout << setw(10) << averageSpeed;
	cout << endl;

	do
	{
		time += .001;
		speed = GRAVITY * time;
		averageSpeed = speed/2;
		height =  initialHeight - (averageSpeed * time);

		cout << setw(10) << time;
		cout << setw(10) << height;
		cout << setw(10) << speed;
		cout << setw(10) << averageSpeed;
		cout << endl;
	}
	while(height > 0);
	

}