$A$ coin and a piece of paper are dropped simultaneously from the same height. Which of the two will touch the ground first? What will happen if they are dropped in a vacuum? Give reasons for your answer.

(N/A) In air,the coin will touch the ground first because the air resistance acting on the paper is significantly higher due to its larger surface area relative to its mass,which slows it down.
In a vacuum,both the coin and the paper will touch the ground at the same time.
This happens because,in a vacuum,there is no air resistance. According to the law of gravitation,all objects fall with the same acceleration due to gravity $(g)$,regardless of their mass or shape.