An 8.00g bullet is fired at 220m/s into a 250g wooden block that is initially at rest. The bullet remains in the block and after the collision the two slide up a 30° incline.

Question

An 8.00g bullet is fired at 220m/s into a 250g wooden block that is initially at rest. The bullet remains in the block and after the collision the two slide up a 30° incline.
a. Solve for the velocity of the bullet-block after the collision. (ans: 6.82m/s) b. Determine distance along the incline the bullet-block travel if the incline is
frictionless. (ans: 4.74m)

I solved for part a, and got 6.82 m/s just fine. But I can't seem to solve for b. I think this is a kinematic since without friction it isn't necessary to make a free body diagram. I multiplied 6.82cos30 and 6.82sin30 to get the respective initial velocities in the x and y direction. There seems to be no acceleration in the x since the block was struck at rest so the final velocity will be the same..... But you still don't have enough to find the change in x or y. What am I missing?
-Mollie