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## Homework Statement

A ball is thrown upward at an angle of 30° to the horizontal and lands on the top edge of a building that is 20 m away. The top edge is 5.0 m above the throwing point. How fast was the ball thrown?

## Homework Equations

xcos30

ysin30

## The Attempt at a Solution

Im not sure what I am supposed to do considering there is no velocity given