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A particle is acted upon by a constant power. Then, which of the following physical quantity remains constant?
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The correct answer is:
Rate of change of kinetic energy
We have Power $=$ Rate of doing work $=\frac{d W}{d t}$
or, $\quad P=\frac{d W}{d t}=$ rate of change in $\mathrm{KE}$
i.e., $\quad P=\frac{d W}{d t}=\frac{d(\mathrm{KE})}{d t}=$ constant
or, $\quad P=\frac{d W}{d t}=$ rate of change in $\mathrm{KE}$
i.e., $\quad P=\frac{d W}{d t}=\frac{d(\mathrm{KE})}{d t}=$ constant
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