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ICSE Class 10 Physics 2015 Paper

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Question : 16 of 74
Marks: +1, -0
Rajan exerts a force of 150 N150\,\mathrm{N} in pulling a cart at a constant speed of 10 m/s10\,\mathrm{m}/\mathrm{s} . Calculate the power exerted.
Solution:  
Given : Force =150 N=150\,\mathrm{N}, Speed =10 m/s=10\,\mathrm{m}/\mathrm{s}.
  Power    =  Force  ×  Speed  \;\text{Power}\;\;=\;\text{Force}\; \times \;\text{Speed}\;
  =150×10\;=150 \times 10
  =1500  Watt.\;=1500 \;\text{Watt.}
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