A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height 500 m. It falls on the ground at a distance of 400 m from the bottom of the cliff. The recoil velocity of the gun is:
(Take 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: Here Mass of the gun 
Mass of the ball 
Height of the cliff, 
Time taken by the ball to reach the ground is
Horizontal distance covered = ut
Where u is the velocity of the ball
According to law of conservation of linear momentum we get
-ve sign shows that the direction of recoil of the gun is opposite to that of the ball.
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