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## Homework Statement

I need to find the velocity vector of the cue ball. I know the start-coordinates, end-coordinates(when it hits the red ball), and the time it takes for the travel, but i have no clue on how to make the vector.

start(21, 0)

end(21, 12)

time = 0.1seconds

not sure if nessecary, but both of the balls diameters are 5.715cm

I need the velocity vector to calculate the end-coordinates of the red ball.

help is much appreciated :)