one drops a sphere and piece of paper from the same height of 10 meters. time when sphere hit the ground is 1.4 sec and paper is 2 sec.

Question

what's the gravity associated with the sphere?

 

why did the impact time in case of piece of paper change in comparison? (formula used)

Answer 1

The force of gravity, 9.807 m/s², is the same for both. The paper has greater air resistance - it floats - than does the sphere.