Answer:
6. momentum
7. Impulse
8. Thermal equilibrium
9. Elastic Collision
10. Internal forces
11. Projectile motion
12. Trajectory
13. 9.8 m/s/s
14. x = V * t
15. An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.