In a local bar, a customer slides an empty beer mug down the counter for a refill. The bartender is momentarily distracted and does not see the mug, which slides off the counter and strikes the floor 0.50 m from the base of the counter. The height of the counter is 0.900 m.
(a) With what velocity did the mug leave the counter?
___________m/s
(b) What was the direction of the mug's velocity just before it hit the floor?
__________° (below the horizontal)