The Boat/Rock Brainteaser ft Simone Giertz part 2/3

Simone's problem with the first question is that early on in physics a lot of the theory ignores wind resistance because in relation to dropping a rock off a building it does not make much of a difference to the results. if she studied physics for longer then she would have had a better understanding of wind resistance. 

the boat question is simple if you picture the rock as a 1 ton pebble. the boat would have to displace lots of water to hold the 1 ton pebble but in the water the pebble will only displace a tiny amount of water as it sinks, therefore the water level will go down.