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प्रश्न
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
उत्तर
Total energy of a free falling object remains conserved.
So,
Kinetic energy at the ground = Potential energy at the top = 80 J
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संबंधित प्रश्न
Show that the sum of kinetic energy and potential energy (i.e., total mechanical energy) is always conserved in the case of a freely falling body under gravity (with air resistance neglected) from a height h by finding it when
- The body is at the top.
- the body has fallen a distance x.
- the body has reached the ground.
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