1.

A gun fires a bullet of mass 50 gm with a velocity of \[30\,m\,{{\sec }^{-1}}\]. Because of this the gun is pushed back with a velocity of \[1\,m\,{{\sec }^{-1}}\]. The mass of the gun is [EAMCET 1989; AIIMS 2001]

A.          15 kg                             
B.          30 kg
C.          1.5 kg
D.                       20 kg
Answer» D.                       20 kg


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