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If A is a unit vector in a given directi...

If A is a unit vector in a given direction then the value of `hatA.(dhatA)/(dt)` is

A

0

B

1

C

`(1)/(2)`

D

2

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Since A is a unit vector in given directtion It sholud be a contant unit vector .
`Or (dA)/(dt)=0`
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