Answers

2016-02-15T19:17:42+05:30
It is so because of weight of both. Paper boat is light so it float on water and iron wheel has heavy weight that's why it sink's.
1 5 1
The Brainliest Answer!
2016-02-15T19:17:46+05:30
This is all because of archimedes principle 
and 
the average density of the boat is less than water. The average density of a nail is greater than water.
3 4 3