Answers

2016-07-13T21:43:57+08:00
2 newton-meter aaaaaaaaaa

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oh wait you need the unit force. there is no work done for the book
2016-07-14T19:25:52+08:00
The given are mass 1kg and distance 2m  
and the required is work
equation mass times acceleration due to gravity times distance
solution mass 1kg and acceleration due to gravity 9.8 m/s squared distance 2m
answer19.6 joules

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