1. a bullet of mass 10 g is fired at a speed of 10 m/s-1 from a gun of a mass of 4 kg. what is the recoil velocity of the gun?
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Asked by ujjawalraj95049 | 3rd Jul, 2019, 10:51: PM

Expert Answer:

On applying the conservation of momentum for gun bullet system we get
 
T o t a l space m o m e n t u m space b e f o r e space f i r i n g space b u l l e t equals space t o t a l space m o m e n t u m space a f t e r space f i r i n g space b u l l e t
0 equals m subscript B V subscript B plus m subscript G V subscript G
0 equals 10 over 1000 cross times 10 plus 4 V subscript straight G
V subscript straight G equals negative 0.025 m divided by s
Here negative sign indicates that the velocity of the gun is in opposite direction to the velocity of bullet.

Answered by Utkarsh Lokhande | 4th Jul, 2019, 08:48: AM