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Ludmilka
[50]
3 years ago
5
A 20 kg box has been lifted 0.7m. How much work has been done?
Biology
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1
answer:
Serga
[27]
3 years ago
4
0
The work done is 137 joules.
Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.
20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)
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