Question

An apple falls from a tree. Its position, at 0.3 second intervals, is shown below. At 0.0 seconds, the apple has not yet fallen, and at 0.9 seconds, the apple is about to hit the ground.
At which time does the apple possess the least potential energy?

options:

0.0 seconds


0.3 seconds


0.6 seconds


0.9 seconds

Answer 1

the answer is 0.0 then 0.9

Answer 2

When ball is about to hit the ground, almost all its potential energy has already converted into kinetic energy. Thus at t=0.9 sec, it has least potential energy.