Abdul, a great question. I can remember asking this question to a class of 9yr olds. Our investigations started by dropping a sheet of A4 paper and timing how quickly it reached the floor. We had to make the test fair and then recorded our answers. We then all screwed up our piece of A4 paper and then predicted how long it would take to drop the same distance, again making sure the test was fair.
Several in the class said that the results of the test was unfair, because the sheet of paper had been made heavier. A mass balance proved that was not the case. So why had the screwed up ball of paper fallen faster? Your thoughts please.
So how can we test if heavier things fall faster than light things? Is it true or not true? What things do we need to change and what things do we need to make sure are the same. We need a fair test. Let me know your answers.