A small block slides down a frictionless track whose shape is described by y = (x²)/ for x < 0 and by y = -(x²)/ for x > 0. The value of is 4.80 m, and x and y are measured in meters as usual. Suppose the block starts from rest on the track at x = -1.21 m. What will the block's speed be when it reaches x = 0?
Options:
A) 5.0 m/s
B) 3.0 m/s
C) 2.0 m/s
D) 4.0 m/s
