Forces and Motion

2. a friction force that acts on a rolling object
3. the product of an objects mass and velocity
6. the constant velocity of a falling object when the force of air resistance equals the force of gravity
8. holds us to the ground
9. the force of gravity acting on an object
12. the amount of matter in an object
14. a push or pull that acts on an object
15. the action or process of moving or changing place or position
16. a friction force that opposes the motion of an object through fluid
17. the state of motion, an object does not change as long as the net force acting on that object is zero
18. a friction force that acts on an object moving

1. the acceleration of an object is equal to the net force acting on the object divided by the object's mass
4. for every action, there is an equal and opposite reaction
5. the volume of air in a particular environment, with greater volumes creating high pressure
7. a friction force that opposes the motion of an object as it slides over a surface
10. the curved path that an object in free fall after it is given an initial forward velocity
11. a force that opposes the motion of objects that touch as they move past each other
13. the tendency of an object to resist change in its motion