I have doubt for the following question. Please help. A 4.5 g particle moving at 170 m/s collides with 0.89 g particle initially at rest. After the collision the two particles have velocities that are directed 26 deg on either side of the original line of motion of the 4.5 g particle. What is the speed of the 0.89 g particl after the collision? I used momentum conservation for X and Y direction to obtain 955 m/s, which was wrong. Px = 4.5 * 170 = 4.5V1cos26 + 0.89V2cos26 for Py 4.5 V1Sin26 = 0.89 V2sin26 Thanks alot.