In a saloon, a cowboy slides an empty beer mug down the counter for a refill. The height of the counter is 1.14 m. The mug slides off the counter and hits the floor 1.55 m from the base of the counter. (a) With what speed did the mug leave the counter? 3.2135 m/s Correct: Your answer is correct. (b) What is the direction of the mug's velocity just before the mug hits the ground?

Explanation:

Given

Height of counter

Mug lands at a distance of

Mug is released with some horizontal velocity let's say u

Consider vertical motion and using

where  

y=displacement  in vertical direction

u=initial velocity

a=acceleration(g)

t=time

For mug to travel 1.55 m in 0.482 s velocity is given by

vertical velocity just before hitting

Horizontal velocity is

where is the angle which net velocity makes with horizontal direction in clockwise sense

powerful computers now, not then

iron would move it is magnetic there is a mag field around the current in the wire