Explanation:
because it doesn't depend upon other unit like kg meter and second

<u>Given :</u>








<u>Let's Slove :</u><u> </u>



All metals except potassium and sodium, have a property known as malleability. Malleability is the quality of something that can be shaped into something else without breaking. So when aluminium and copper are hammered they will not break. Rather they will change shape and become thin or flat at the area where its hammered.
All Non- metals except diamond are brittle in nature, so when we hammer it , they will break down into pieces. So when ice and glass will be hammered they will shatter into pieces.
Inconsistent. You should take three readings at least.