Question

An aeroplane fly 2100 km in 3 hours . How far it will travel in 36 seconds

Answer 1

$$\begin{gathered} \mathrm{Dear}\mathrm{student}, \\ \mathrm{Speed}\mathrm{of}\mathrm{aeroplane}=\frac{\mathrm{Distance}}{\mathrm{time}}=\frac{2100}{3}\mathrm{km}/\mathrm{hr}=700\mathrm{km}/\mathrm{hr} \\ \mathrm{So},700\mathrm{km}/\mathrm{hr}\mathrm{in}\mathrm{m}/\mathrm{s}=700\times \frac{5}{18}=\frac{1750}{9}\mathrm{m}/\mathrm{s} \\ \mathrm{Distance}\mathrm{travelled}\mathrm{in}36\mathrm{s}=\mathrm{Speed}\times \mathrm{Time} \\ =\frac{1750}{9}\times 36=7000\mathrm{m}=7\mathrm{km} \\ \mathrm{Regards} \end{gathered}$$