get input user input on width (float)
if greater than 400 or less than 1, ask again.

repeat upper lines for variable length


set area to ((width * length)/2)/10000
print area

set aspect_ratio to width/length
if aspect_ration is greater than one, warn user

constant kite_weight set to 135

set mass to (area*kite_weight)/10000
print mass

constant gravitational_constant set to 9.8

set gravitational_pull to mass*gravitational_constant
print gravitational_pull