In the image on the right, the rollercoaster has a mass of 200 kg.

1. How much mechanical energy does the rollercoaster have at point B if it has a height of 0 meters? Round to the nearest tenth if necessary.

2. When the rollercoaster is at point A, how much kinetic energy does it have?

3. When the rollercoaster is at point A, how much potential energy does it have?

4. How high is the rollercoaster at point A? Round to the nearest tenth if necessary.

5. When the rollercoaster is at point C, what is its kinetic energy?

6. When the rollercoaster is at point C, what is its potential energy?

7. How high is the rollercoaster at point C? Round to the nearest tenth if necessary.