A satellite in force-free space sweeps stationary interplanetary dust at a rate dM/dt=αv where M is the mass, v is the velocity of the satellite and α is a constant. What is the deacceleration of the satellite 

(1) 2αv2/M

(2) αv2/M

(3) +αv2/M

(4) αv2

Concept Videos :-

#29-Thrust-Force
30-Solved-Examples-14

Concept Questions :-

Variable mass system

(3) F=dpdt=vdMdt=αv2

a=FM=αv2M 

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