Question

A stone falls 561.7 m. When the stone lands, the internal energy of the ground and the stone increases by 105 J. What is the stone’s mass?

1- 1.91 kg

2- 191 kg

3- 1.91 × 10^−2 kg

4- 1.91 × 10^2 kg

5- none of these

Answer 1

Explanation:

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Answer 2

None of these.

Explanation:

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