import greenfoot.*;

import java.util.List;
import java.util.ArrayList;


public class Ball1 extends Actor
{
    private double ho=0, vo=0, g=10, dt=0.25;
    
   
    public void addedToWorld(World Latar)
    {
        ho=getY();
   
    
    }
   
   
    public void act()
    {   
        if(getY()<(getWorld().getHeight())){
        double ht=ho+vo*dt+0.5*g*dt*dt;
        vo+=g*dt;
            if(ht>(getWorld().getHeight())){
                ht=(getWorld().getHeight());
                vo*=-0.835; //Federung
            }
            
        setLocation(getX(),(int)ht);
        ho=ht;
    }
  
     
}
    
}