d
કાર્ય \( = \,\frac{1}{2}m{\upsilon _2}^2\, - \,\frac{1}{2}m{\upsilon _1}^2 = \,\,\,\frac{1}{2}m({\upsilon _2}^2 - {\upsilon _1}^2)\,\,\,\,\, = \,\,\,\,\frac{1}{2} \times 3 \times {10^6} \times ({(25)^2} - {(5)^2})\,\,\,\)

\( = \frac{1}{2} \times 3 \times {10^6} \times (625 - 25)\, = \,\,\,\frac{1}{2} \times 3 \times {10^6} \times 600\,\,\,\, = \,\,\,900 \times {10^6}\)

પાવર \({\text{P  = }}\) (કાર્ય / સમય) \( = \frac{{900 \times {{10}^6}}}{{5 \times 60}}\,\, = \,\,\,3 \times {10^6}\,W\, = 3\,MW\)