The Initial Speed of a Cannon Ball Is 0

question 72

Multiple Choice

The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?

• A) 16 s
• B) 21 s
• C) 24 s
• D) 14 s
• E) 19 s

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