What is the minimum air speed needed to lift the penny off the tabletop?

In a dramatic lecture demonstration, a physics professor blows hard across the top of a copper penny that is at rest on a level desk. By doing this at the right speed, he can get the penny to accelerate vertically, into the airstream, and then deflect it into a tray, as shown in the figure . Assuming the diameter of a penny is 2.00 cm and its mass is 2.60 g, what is the minimum air speed needed to lift the penny off the tabletop in m/s? Assume the air under the penny remains at rest.