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Subjects
Science CBSE
Class 9
Work and energy
Textbook based HOTS II
31.
Multiple choice question XXXI
Exercise condition:
2
m.
A boy of mass \(50\ kg\) runs up a staircase of \(45\) steps in \(9\ s\). If the height of each step of the staircase is \(15\ cm\), find the power of the boy. (Take \(g\ =\ 10\ ms^{–2}\)).
\(375\ W\)
\(480\ W\)
\(550\ W\)
\(3375\ W\)
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