A body is projected from ground obliquely. During downward motion power delivered by gravity to it.

Increases

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Decreases

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Remain constant

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First decrease and then become constant

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Solution

The correct option is A Increases
Power delivered by any force is given by $P = \frac{d W}{d t}$
W= work done by force
We know that, $W = F . s$
$P = F . \frac{d s}{d t}$
$P = F . v$
$n o w t h e p o w e r d e l i v e r e d b y t h e f o r c e w i l l b e p o s i t i v e i f t h e a n g l e b e t w e e n a p p l i e d f o r c e a n d v e l o c i t y i s a c u t e a n g l e o r l e s s t h a n 90 d e g r e e^{'}$ .
Thus the power will be increasing.

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