The velocity of the cannonball is 150 m/s, the right option is B. 150 m/s.
The question can be solved, using Newton's second law of motion.
Note: Momentum of the cannon = momentum of the cannonball.
Make v the subject of the equation.
From the question,
Substitute these values into equation 2.
Hence, The velocity of the cannonball is 150 m/s, the right option is B. 150 m/s.
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