force vocab

5. A push or pull on one object by another that is touching it
6. Friction acting upon an object moving through the air
9. The maximum speed an object will reach when free-falling through a substance, such as air
10. a push or pull exerted on an object
11. The upward force that is applied to objects when they exert a force on a surface
15. When the net force of an object is zero
16. the force of gravity on an object at the surface of the planet
17. the amount of matter in an object
18. equal forces acting on an object in opposite directions

1. forces that produce a nonzero net force, which changes an object's motion
2. The tendency of an object to resist any change in its motion
3. the force that one surface exerts on another when the two surfaces rub against each other
4. A force exerted toward the center of a curved path
7. A force that one object can apply to another without physically touching
8. Unit) A unit of measurement that equals the force required to accelerate 1 kilogram of mass at 1 meter per second, per second
12. the force that pulls objects toward each other
13. the motion of a falling object when the only force acting on it is gravity
14. Force the overall force on an object when all the individual forces acting on it are added together