1.

A satellite in force-free space sweeps stationary interplanetary dust at a rate \[dM/dt=\alpha v\] where M is the mass, v is the velocity of the satellite and \[\alpha \] is a constant. What is the deacceleration of the satellite            [CBSE PMT 1994]

A.                         \[-2\alpha {{v}^{2}}/M\]          
B.                           \[-\alpha {{v}^{2}}/M\]            
C.                         \[+\alpha {{v}^{2}}/M\]          
D.                           \[-\alpha {{v}^{2}}\]
Answer» D.                           \[-\alpha {{v}^{2}}\]


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