A horizontal constant force F pulls a bl...

A horizontal constant force F pulls a block of mass m placed on a horizontal surface. If the coefficient of kinetic friction between the block and ground is `mu`, find the power delivered by the external agent after a time t measured from the beginning of action of the force.

`ma ^2t`

`mumgat `

`mum(a+mug)"gt"`

`m(a+mug)at`

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