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Step by step solution 4. While defending their castle from invasion soldiers fire cannon balls from the top of the 15.0m castle walls. If the

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4. While defending their castle from invasion soldiers fire cannon balls from the top of the 15.0m castle walls. If the cannon balls reach a maximum distance of 507.7m in 10.34s, a. What velocity were the cannon balls fired with? Answer in km/h using polar coordinates. b. With what impact velocity did the cannon balls land

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