Please solve a and b

2. A 0.1 kg blue marble is released from rest down a marble-rollercoaster as shown below. 2 3 4 hio The height at point 1 is 8m, the height at point 2 is 6m, the height at point 3 is 4m, and the height at point 4 is 2m. Assume no friction. [Level 3-4: Strand (li)] a. Make the necessary additions to the picture. b. Find the velocity at points 1, 2, 3, and 4. Solve for velocity in terms of only variables once, and then use that formula for all of your calculations. "ROUND YOUR ANSWERS TO 3 SIG FIGS"