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A satellite in a force-free space sweeps...

A satellite in a force-free space sweeps stationary interplantary dust at a rate `(dM)/(dt) = beta upsilon`, where `upsilon` is the speed of escaping dust w.r.t. satellite and `M` is the mass of satellite at that instant. The acceleration of satellite is

A

`(-betav^2)//M`

B

`(-betav^2)//2 M`

C

`betav^2`

D

`-Mbeta//v^2`

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