PLEASE HELP ill also answer questions that you have posted if you answer these correctly (40pts)

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

What will a positive and a negative charge do if they are separated from each other?