Question 3 (2 points) While at the top of a roller coaster the 1100kg car briefly halts before rolling down towards the first dip. If the car reaches a height at 20m while halted. how much Gravitational Potential energy does it have there? (5) How much Work was done by the electric motor that lifted this car up a spiral track that was 56m long? Remember to always support your answers. (5) Submit your numerical answer to two significant digits here and full solutions to the drop box. Diagrams for energy questions show the overall situation and what energies are significant at the required points of interest. Blank # 1 5/ Blank # 2 5/