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The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing.
(a) Find the final speed of puck A.

(b) Find the final speed of puck B.

i got part b which was 2.8 but have no idea how to get part a alitle help please. thank you

remember, conservation of momentum is a vector, so do it in two directions, x, and y. Conservation of energy is just one equation. You can get three equations out of these.

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