Please answer and show work

First Hill Scale 1.0 cm = 3.0 m Second Hill Third Hill End of ride a. Using one or more complete sentences, compare the kinetic energy of the car at the top of the second hill to its kinetic energy at the top of the third hill. b. Determine the gravitational potential energy of the car at the top of the first hill. [Show all calculations, including the equation and substitution with units.]