Science

5. A speed in a specific direction.
6. The resistance of an object to a change in the speed or the direction of its motion.
7. The force of gravity on an object.
10. a force that keeps an object moving in a circle.
14. The overall force acting on an object when all of the forces acting on it are combined.
15. The path of an object in space as it moves around another object due to gravity.
17. The process of pushing the particles of a material closer together.
19. A property of matter representing the mass per unit volume.
20. A substance that can flow easily
21. A measure of how fast something moves through a particular distance over a definite time period.

1. The force that stretches an object.
2. The fluid friction due to air.
3. An amount of three-dimensional space often used to describe the space that an object takes up.
4. A change of position over time.
8. The upward force on objects.
9. The force that objects exert on each other because of their mass.
11. The force in an object that resist stretching or pressing.
12. The rate at which velocity changes over time.
13. A push or pull.
16. An object loction.
18. A measure of how much force is action on a certain area.