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When a force (8hati+4hatj) newton displa...

When a force `(8hati+4hatj)` newton displaces a particle through `(3hati-3hatj)` metre, the power is 0.6W. The time of action of the force is

A

20s

B

7.2s

C

72s

D

2s

Text Solution

Verified by Experts

The correct Answer is:
A
`t=(vecF.vecS)/(P)`
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