Need help with Use the Force

I need help with a code, I can’t seem to find the correct code for 5. and 6. Use the Force.

Link:
https://www.codecademy.com/paths/computer-science/tracks/cspath-intro/modules/cspath-python-functions/projects/physics-class

Please see this topic:

How to ask good questions (and get good answers)

How you can make a good topic/post.