Question

1 kg of iron and 1 kg of cotton are allowed to fall from the roof top of a building
simultaneously. Which one do you think will reach the ground first. Justify your answer.

TNSCERT Class 9 General Science Ch 7 Liquids

Answer 1

iron of 1kg will reach first before cotton there less space between the molecules than cotton so air is trapped in the cotton and slows down the speed where's in iron there is little space and air can't be trapped

Answer 2

both of them will touch the ground at the same time since gravitational acceleration is independent of mass...