A body is moving under the action of two...

A body is moving under the action of two force `vec(F_(1))=2hati-5hatj` , `vec(F_(2))=3hati-4hatj` . It's velocity will become uniform under a third force `vec(F_(3)` given by.

`5hati-hatj`

`-5hati-hatj`

`5hati+hatj`

`-5hati+9hatj`

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The correct Answer is:

`(6N)/(8N)=(3)/(4)`

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