two-dimensional collision

hdo

problem:
before - 1st object: m=6kg, v=3m/s
2nd object: m=6kg, v=0m/s
after - 1st object move off in a direction 40 degree to the left of its original path
2nd move to the right of the first's original path
find the speech of each object after the collision
equations:
x-direction: m1v1ix + m2v2ix = m1v1fx + m2v2fx
y-direction: m1v1iy + m2v2iy = m1v1fy + m2v2fy

tiny-tim

Hi hdo! Welcome to PF!:

(try using the X₂ tag just above the Reply box )
Do you mean at 90º?

ok, those are the correct equations … now put the numbers in …

what do you get?

(btw, all the masses are the same, 6 kg, so you can leave them all out! )