A tourist drops a 1-liter water-filled balloon from the top of a monument (170m high). If air resistance is negligible and almost all the motion energy heats the water, find the increase in temperature of the water when it hits the pavement.
(hint: equate mgh in joules to the quantity of heat mc (change) T and express c, the specific heat capicity for water, in terms of joules rather than calories. Use conversion factor 4187J/kg degrees C