In order to find the density of an object, maria is trying to measure its volume. however, the object does not fit in the tool she is using. to solve this problem, maria decides to break apart the object. will maria be able to find density following this method? why or why not?

yes she can. The density of a substance remains constant.

Explanation:

The density of a substance can be defined as the ration of mass upon volume. The density of a substance remains constant. This is because, with change in volume, the amount of mass contained in it also changes in the same proportion. Thus, Maria would be able to find the density of the object after breaking it.  

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min