Question

When an apple falls from a tree what happens to its gravitational potential energy just as it reaches the ground? After it strikes the ground?

Answer 1

Answer ⇒ Gravitation Potential energy is converted into the Kinetic Energy, when it just reaches the ground. Some amount of energy is wasted in sound and heat energy when it strikes the ground. 


Explanation ⇒ 
When the apple falls from the tree, it has some gravitational potential energy due to its height.  

Now, When it starts falling, the Gravitation Potential energy will starts converting into the Kinetic Energy. 

When the apple is about to strikes the ground, the Gravitational Potential energy have been converted into the Kinetic Energy. 

When it strikes the Ground, some amount of the energy is converted into heat and unsold energy and some amount of the energy is used in deforming the shape of the Apple. 


Hope it helps.

Answer 2

HEY!!

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⚫We an apple falls from a tree, it's gravitational potential energy decreases as it reaches the ground.

⚫After it strikes the ground, it's potential energy will remain unchanged.