# Mechanical 80527

A stone with a mass of 2 kg falls in free fall from a tower with a height of 80 m. What is its kinetic energy, and what is its potential energy:

a) At the beginning of the fall,

b) In 1 s from the beginning of the fall,

c) Upon impact,

d) What is its mechanical energy relative to the Earth's surface during the fall?

a) At the beginning of the fall,

b) In 1 s from the beginning of the fall,

c) Upon impact,

d) What is its mechanical energy relative to the Earth's surface during the fall?

## Correct answer:

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