ha whats with all the caculus and Newton's f=ma stuff? useless here. it's a fairly simple projectile motions problem (made even simpler since there is no horizontal component - i assume the pot just simply falls through the floor of the balcony. so all you need is the famous old formula:s = ut + (at^2)/2where s is the vertical displacement the pot travels from the balcony to the head of the guy, u is the initial velocity (zero in this case), a the acceleration due to gravity (9.8ms^-2) and t the time.funny, i was learning this stuff just a few weeks ago in school.