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If a body of mass 2 kg falls from 5 m, what is its mechanical energy at the start? (g = 10 m/s²)
1. 10 J
2. 50 J
3. 100 J
4. 20 J
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If a body of mass 2 kg falls from 5 m, what is its mechanical energy at the start? (g = 10 m/s²)