7. Granny couldn't afford to get repairs on her car, so it no longer has a functioning engine. She sits in her dead car (m = 1600 kg) at the top of a hill, at an elevation above the ground of 26.0 m, and lets it start rolling from rest. It coasts down to an elevation of 11.0 m and then continues up another hill. The top of this second hill is at an elevation of 16.0 m. What is the speed of Granny's car at the top of this second hill? Consider only conservative forces. (g = 9.81 m/s²)

7. Granny couldn't afford to get repairs on her car, so it no longer has a functioning engine. She sits in her dead car (m = 1600 kg) at the top of a hill, at an elevation above the ground of 26.0 m, and lets it start rolling from rest. It coasts down to an elevation of 11.0 m and then continues up another hill. The top of this second hill is at an elevation of 16.0 m. What is the speed of Granny's car at the top of this second hill? Consider only conservative forces. (g = 9.81 m/s²)