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2.Motion in Straight Line
easy
If $v$ is the velocity of a body moving along $x$-axis, then acceleration of body is .........
A$\frac{d v}{d x}$
B$v \frac{d v}{d x}$
C$x \frac{d u}{d x}$
D$v \frac{d x}{d v}$
Solution
(b)
$a=\frac{d v}{d t}=\frac{d v}{d x} \frac{d x}{d t}$ $\left(\frac{d x}{d t}=\right.$ velocity $)$
$a=\frac{v d v}{d x}$
$a=\frac{d v}{d t}=\frac{d v}{d x} \frac{d x}{d t}$ $\left(\frac{d x}{d t}=\right.$ velocity $)$
$a=\frac{v d v}{d x}$
Standard 11
Physics
