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A cannon of weight 10 tonnes fires a shell of 50 kg with a muzzle velocity of 900 m/sec at an angle of 30?. The time taken for the shell to emerge from the barrel is 0.004 sec. The velocity of the cannon would be

[A].	1.95 m/sec	[B].	3.9 m/sec
[C].	5.85 m/sec	[D].	7.8 m/sec
[E].	8.95 m/sec

Answer: Option B

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