PLS HELP FAST!!

A ball is rolling along a frictionless track as shown. If it starts at A. with a speed of 12m / s , what is its speed when it arrives at B? Use the conservation of mechanical energy to arrive at the answer. Assume no non- conservative forces. Show complete work for full credit.

PLS HELP FASTA ball is rolling along a frictionless track as shown If it starts at A with a speed of 12m s what is its speed when it arrives at B Use the conser class=