Question

Express joule in terms of mass, length and time.

Answer 1

Since

\[ 1\ \text{J} = 1\ \text{N} \times 1\ \text{m} \]

and

\[ 1\ \text{N} = 1\ \text{kg m s}^{-2} \]

\[{1\ \text{J} = 1\ \text{kg m}^{2}\ \text{s}^{-2}}\]