VOCABULARY

2. field: A region in space where a force can be exerted on an object without direct contact.
5. The SI unit of force, defined as the force required to accelerate a one-kilogram mass at a rate of one meter per second squared
7. The rate of change of an object's velocity.
8. A fundamental property of matter that measures its resistance to acceleration.
13. of mass: The single point where all the mass of a body is considered to be concentrated for the purpose of analyzing its motion.
15. The state of a body where the net force acting on it is zero, and it is either at rest or moving with a constant velocity.

1. A quantity that has both magnitude and direction.
2. A force that resists the motion of two surfaces sliding or rolling against each other.
3. The force of gravity acting on an object.
4. The property of an object to resist any change in its state of motion.
6. force: A contact force that a surface exerts on an object, acting perpendicular to the surface.
9. The rate at which an object covers distance.
10. A push or pull on an object that can cause it to change its velocity.
11. The single force vector that is equivalent to the effect of a system of multiple forces.
12. force: The vector sum of all individual forces acting on an object.
14. diagram: A diagram showing a single body with all the external forces acting on it represented by vectors.