21. The gun found on a railway platform. Cannon rigidly

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Description

21. The gun found on a railway platform. Cannon rigidly attached to the platform. Weight platform and tools M = 20 m. The gun produces a shot at an angle α = 60 ° to the horizon in the direction of the path. What speed u1 becomes a platform with a tool as a result of the impact when the projectile mass m = 50 kg and he flies out of the barrel at a rate of u2 = 500 m / s?

Additional information

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)

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