関連ワード:  give examples of positive negative and zero work done    give one example of positive negative and zero work done    give two examples of positive negative and zero work done    give one example each of positive negative and zero work done    example of positive negative and zero work done    examples of positive negative and zero work done each    what is meant by positive negative and zero work done give an example of each of them    what do you mean by positive negative and zero work done    example of positive work negative work and zero work    what is positive negative and zero work  
結果 : give an example of positive negative and zero work done