help me answer these questions:

Question 22 Block X of mass 41\\ travels at a speed 5v, toward block Y of mass M, which is initially at rest. After block X elastically collides with block Y, block X has a speed of 3v, in the same direction as before the collision. What is the speed of block Y immediately after the collision? 12y 3vg 8vy 20v, Question 23 Trial Mass of Cart X Mass of Cart Y' Initial Velocity of Cart X Initial Velocity of Cart'Y Final Velocity of Cart X Final Velocity of Cart X Number (kg) (kg) (m/s) (m/s) (m/s) (m/s) 1 5 2 3 -1 0.7 4.7 2 3 2 2 -2 0.4 0.4 3 2 2 4 0 0 4 An experiment is performed in which a collision occurs between cart X and cart Y. Data are collected about each cart before and after a col to verify the conservation of momentum for each trial, and what is a justification for using those data? ision takes place. Which data from the table should the student use @ The initial and final velocity of cart X and the initial and final velocity of cart Y, because the speeds should be compared before and after the collision. All data are necessary to verify the conservation of momentum, because all information for each cart should be known. The mass of cart X, the initial velocity of cart X, and the final velocity of cart X, because the momentum of cart X should be determined before and after the collision. The mass of cart Y, the initial velocity of cart Y, and the final velocity of cart Y, because the momentum of cart Y should be determined before and after the collision. Object X Object Y -2 o 0 o Velocity after Spring Is No Longer Compressed (m/s) - N P+ 0 > 0 0.2 0.4 0.6 0.8 1.0 Time (s) In an experiment, a spring is placed between object X and object Y. Object X has twice the mass of object Y, which has mass M. The two objects are pushed together until the spring is at its maximum compression, as shown in the figure. The objects are released from rest, and data are collected for the speed of each object immediately after the spring is no longer compressed. However, the graph does not indicate which object corresponds to a given velocity, and the positive direction is not indicated. Which of the following correctly describes the velocities of object X and object Y after the collision? @ Object X travels at 4 % and object Y travels at % after the spring is no longer compressed. Q) Object X travels at 2 2 and object Y travels at4