Physics
Grade-10
Easy
Question
When an apple falls from a tree toward the earth, then its total energy.
- Decreases
- Increases
- First increases and then decreases
- Remains constant
Hint:
The total energy of a system is the sum of the potential, kinetic and internal energies.
The correct answer is: Remains constant
When an apple falls from a tree toward the earth, then its total energy Remains constant
- When the apple was on the tree then it was possessing potential energy due to height.
- When the apple falls down from a tree towards the earth then its potential energy starts to decrease and kinetic energy starts to increase which was zero initially when the apple was on the tree.
Hence the total energy remains constant.
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