Three balls of clay have masses
m1 =115 g,speeds v1=1.44 m/s
m2=149 g, v2=1.10
m3=121 g, v3=1.80 m/s.
They move in the directions shown: (1) at 45° from the horizontal, (2) horizontally left, and (3) vertically up. They collide simultaneously and stick together.

Calculate the speed and the direction of the resulting blob of clay.

I solved the speed to be 0.290 m/s it's the direction I am having trouble with

Question

Three balls of clay have masses 
m1 =115 g,speeds v1=1.44 m/s
m2=149 g, v2=1.10 
m3=121 g, v3=1.80 m/s. 
They move in the directions shown: (1) at 45° from the horizontal, (2) horizontally left, and (3) vertically up. They collide simultaneously and stick together.

Calculate the speed and the direction of the resulting blob of clay.

I solved the speed to be 0.290 m/s it's the direction I am having trouble with