hello i need help woth my preparation to physics hw ty!

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest. It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air resistance is negligible, and the collision is elastic. The masses of the ball and block are, respectively, 1.?6 kg and 2.91 kg, and the length of the wire is 1.2 rn. Find the yelocity of the ball just after the collision. Specify your answer upto 3 decimal places in 51' units. Do not include units. HtNT: First nd the velocity of the troll right before collision [using Energy Conservation) The drawing shows a sulfur dioxide molecule. It consists of two Oxygen atoms and a Sulfur atom. A sulfur atom is twice as massive as an oxygen atom. Using this information and the data provided in the drawing, nd the If coordinate of the center of mass of the sulfur dioxide molecule. Specify your answer in nanometers up to 4 decimal places. We\" 3* Oxygen