#include <iostream>
#include <stdlib.h>

using namespace std;

int main() {
	//best not to use global variables
	float velocity;
	float acceleration;
	float time;
	float distance;
    float final_velocity;	

    cout << "enter the velocity_original in km/hr: \n"; //newline character placed inside strings
    cin >> velocity;
    
    cout << "enter the acceleration km/hr^2:"<< endl; //or use endl
    cin >> acceleration;
    
    cout << "enter the distance traveled im m.\n";  
    cin >> distance;    
	
    final_velocity = (velocity * 1000.0 / 3600.0);
    
    time = (2.0 * distance / final_velocity);
    
    acceleration = final_velocity / time;
    
    cout << "the acceleration is " << acceleration << " m/s^2.  \n";
    cout << "time it took for a fighter to accelerate to takeoff is"
      << time << " seconds. \n";
      
    system("PAUSE");
    return 0;
	//you need to learn a lot so don't give up yet
}