Question

Submarine starts moving down in water at a rate of 6 metre per minute after sometime it reaches a depth of 60 m. how will this distance be presented how much time will the submarine take to reach this level

Answer 1

$$\begin{gathered} \mathrm{Hi}, \\ \mathrm{Since}\mathrm{we}\mathrm{are}\mathrm{going}\mathrm{down}\mathrm{the}\mathrm{sea}\mathrm{level}\mathrm{so}\mathrm{this}\mathrm{dstance}\mathrm{be}\mathrm{represented} \\ \mathrm{in}\mathrm{negative} \\ \mathrm{so}\mathrm{distance}=-60\mathrm{m} \\ \mathrm{and}\mathrm{since}\mathrm{in}1\mathrm{minute}\mathrm{it}\mathrm{coverse}6\mathrm{m} \\ \mathrm{so}\mathrm{for}6\mathrm{m}\mathrm{it}\mathrm{takes}=1\mathrm{minute} \\ \mathrm{for}1\mathrm{m}\mathrm{it}\mathrm{will}\mathrm{take}=\frac{1}{6}\mathrm{minute} \\ \mathrm{and}\mathrm{for}60\mathrm{m}\mathrm{it}\mathrm{will}\mathrm{take}=60\times \frac{1}{6}\mathrm{minute}=10\mathrm{minute} \end{gathered}$$