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