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Across 1. Objects stop speeding up when they fall because they hit _____ velocity. 3. For speed, you need to know distance and ______. 5. He proved that objects will fall at the same rate. 7. Objects accelerate to Earth at a rate of 9.8 ______ per second per second. 9. Horizontal velocity is _________. 10. The more ____ an object has, the more gravitational force it has. 11. If you throw a ball, the ball is called a _________. 13. Objects going in a ____ motion are constantly changing directions. 16. "Toward the Center." 18. You must have ______ force for an object to move. 19. The KC-135 is also called this.

Down 2. He thought that more massive objects fall faster. 4. Two ____ combine to for projectile motion. 6. If you are standing up, you are _____________. 8. A flat line is _________________. 12. If gravity is the only thing pulling on a object falling, it is in _____. 14. Vertical velocity increases because gravity causes it to ____ downward. 15. Speed of an object in a particular direction. 17. What kind of friction is air resistance?