This newspaper style writing assignment allows students to show what they've learned about Newton, force, and motion in a fun and creative way. The file is editable so you can customize it to your own needs if you wish. As is, it asks students to tell about Newton or Newton's laws, gravity, and balanced and unbalanced forces. There are also sections that are more open-ended (sports, weather, and help wanted) in which students could choose to write about friction, magnetism, momentum, acceleration, inertia, gravity, speed, balanced and unbalanced forces, or other terms you've covered. There is even a spot for a comic strip and joke of the day.
Additionally, because this is an editable file, you could choose to keep the layout and change the titles and headings completely to tailor this assignment to many other topics as well.