- h=10m-5m=5m
- m=90Kg
- g=9.8m/s^2



Now
It's converted to kinetic energy while reaching ground.





Done
Answer:
The mystery that Greene discusses is that dark energy is causing the expansion of the universe to accelerate. However, this cannot be explained by the laws of Physics.
Explanation:
I majored in Physics
1. 25
2. 55-25 = 30
Hope this helps! :)
To increase the potential energy of any object, not limited to an apple, you have to hold it higher.