def Height(Force,kg,Area,form):
	Ftotal=Force
	A=Area
	m=kg
	cw=form
	v=0
	H=0
	HC=1
	g=9.82
	t=1
	Count=0
	while H<2000 and HC!=H:
		Count=1+Count
		HC=H
		p=1.225-0.00013333333*H
		if p<=0:
			p=0
		F_air=0.5*cw*p*A*v*v
		Ftotal=Force-F_air-(g*m)
		H=H+0.5*(Ftotal/m)*t*t
		v=(Ftotal/m)*t+v
		if Count%10000==0 or Count<1000:
			print ("H=",H,"a=",(Ftotal/m),"v=",v,"F=",Ftotal,"air=",F_air)
	print (Count)