"Unit 3 - Force and Motion": HTML5 Crossword

Across

2. Attractive force between two objects that depends on the masses of the objects and the distance between them. (7)
3. Tendency of an object to resist changes in motion (7)
5. Units of Mass (8)
8. Units of Distance (6)
10. type of force that results when 1 force is stronger or weaker than the other (10)
11. Acceleration is directly proportional to the force and inversely proportional to the mass of the object. (6,3)
12. type of force that results when both of the forces against each other are equal (8)
14. The force that two surfaces exert on each other when they rub against each other (8)
17. friction that occurs when an object rolls over a surface (7,8)
18. Units of Time (7)

Down

1. a friction force that opposes the motion of an object as it slides over a surface (7,0)
4. A push or pull exerted on an object (5)
6. The rate of change in velocity (12)
7. Units of Force (6)
9. the friction that occurs when a solid object moves through a fluid (5,0)
13. Speed in a given direction (8)
15. The sum of all the forces acting on an object (3,5)
16. Objects at rest stay at rest, objects in motion stay in motion unless acted on by an unbalanced force (5,3)
18. a friction force that acts on objects that are not moving (6,0)