"Unit 2 - Describing Motion": HTML5 Crossword

Across

1. Push or Pull on an object (5)
3. The property of things to resist a change in motion (7)
4. Units for distance (6)
5. Standard unit of force in the SI (6)
6. The rate of change in velocity over time (12)
8. Units for speed (6,3,6)
10. The quantity of matter in an object (4)
13. The vector sum of all forces acting on a non-accelerating object equals zero (11,4)
14. Motion under the influence of gravitational pull only (4,4)
16. measures the total path taken (8)
17. an object's change in position relative to a reference point (6)
18. Type of friction that occurs when the object is moving or in motion. (7)

Down

1. Force that opposes motion (8)
2. a system for specifying the precise location of objects in space and time (5,2,9)
7. Force of friction in the air (3,10)
9. the net change of an object's position (12)
11. Support force that is at right angle to the surface (6)
12. The unit of measure of mass (9)
15. The total of all forces acting on the object (3,5)
16. Measure of mass per unit of volume for a substance (7)