Question

1 . Convert 2 hours into seconds.

Answer 1

$$\begin{gathered} 1\mathrm{Hour}=60\min \\ 1\min =60\sec \\ \Rightarrow 1\mathrm{Hour}=60\times 60=3600\sec \end{gathered}$$

Therefore,$2\mathrm{Hours}=2\times 3600=7200\sec$