関連ワード:  give some examples of negative work done    give two examples of negative work done    give two examples of negative work done class 9    give three examples of negative work done    give an example of negative work done    give an example of negative work done by a body    give an example of negative work done class 9    give an example of negative work done by a force    give two examples of each negative work done    give an example of positive and negative work done  
結果 : give some examples of negative work done