Two balls 'A' and 'B' are thrown vertically upwards with the same velocity. The mass of A is greater than that of B. We need to find which of the balls reaches a greater height (assuming the effect of air resistence is negligible).
I personally feel that A would travel further since its momentum is higher than that of B. But few people whom I discussed this question with had different opinion.
One said that they would both travel the same distance since $s=(ut) + (1/2)at^2$ The other said that B would travel further since the effect of gravity on it is less according the universal law of gravitation.
If someone could explain which of these is correct or maybe point out the flaw in either of them then it would help a lot. Thanks in advance.