A small block slides down a frictionless track whose shape is described by y = (x^2)/d for x<0 and by y = - (x^2)/d for x>0. The value of d is 2.50 m, and x and y are measured in meters as usual. Suppose the block starts from rest on the track, at x = -2.43 m. What will the block s speed be when it reaches x = 0? 1 6.81 m/s 2 4.82 m/s 3 3.86 m/s 4 9.53 m/s

A small block slides down a frictionless track whose shape is described by y = (x^2)/d for x<0 and by y = - (x^2)/d for x>0. The value of d is 2.50 m, and x and y are measured in meters as usual. Suppose the block starts from rest on the track, at x = -2.43 m. What will the block s speed be when it reaches x = 0? 1 6.81 m/s 2 4.82 m/s 3 3.86 m/s 4 9.53 m/s