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The kinetic energy of a particle of mass...

The kinetic energy of a particle of mass m moving with speed v is given by `K=(1)/(2)mv^(2)`. If the kinetic energy of a particle moving along x-axis varies with x as `K(x)=9-x^(2)`, then The region in which particle lies is :

A

`x ge 9`

B

`-3 le x le 3`

C

`0 le x le 9`

D

`-oo lt x lt oo`

Text Solution

Verified by Experts

The correct Answer is:
2
As`" "K= (1)/(2) mv^(2) ge 0 ` so ` 9-x^(2) ge 0 rArr -3 le x le 3`
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