Help can't figure this out please explain?

Question

At a local bar, a customer slides an empty beer mug on the counter for an refill. The mug slides off the counter and strikes the floor 1.40 m, A) at what speed did the mug leave the counter and (B) what is the direction of the mugs velocity before it hit the floor?

Answer 1

You left out the height H of the counter, so you get an algebraic expression instead of a numerical answer.
Time T to fall to the floor = sqrt(2H/g)
A) hor. vel. Vx = 1.40/T
B) vert. vel. Vy = -gT. Angle theta (with respect to +x axis; positive = counterclockwise) = arctan(Vy/Vx).