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A ball is launched from the ground toward a tall wall of a building at initial...

A ball is launched from the ground toward a tall wall of a building at initial speed v0 = 21 m/s at an angle of 42 degrees relative to the horizontal. The wall is at a distance of 29 m from the launch point. What is the magnitude of the ball's velocity vector as it hits the wall? Your answer should be in m/s, but enter only the numerical part in the answer box.

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