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The linear momentum of a particle as a f...

The linear momentum of a particle as a function of time t is given by `p= a+bt` , where a and b are positive constants . What is the force acting on the particle ?

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Linear momentum of a particle `p= a+bt`
Force `F= (dp)/(dt) =d/(dt) (a+bt)=0+b`
` :. F= b `
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