a baloon moves vertically such stone is projected with horiz velocity u relative 2 baloon the stone always hits a river at a fixed distance 2u^2/g horiz away frm it find height of balloon as func of time
a baloon moves vertically such stone is projected with horiz velocity u relative 2 baloon the stone always hits a river at a fixed distance 2u^2/g horiz away frm it find height of balloon as func of time