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# Chapter sixteen voc.

### Chapter 16 vocabulary quiz:Friday,January 20th.

The speed and direction of a moving object. Velocity
A push or pull. Force
The combination of all the forces acting on an object. Net force
Two or more forces exerted on an object. Balanced forces
Two or more forces acting on an object that doesn't cancel,and cause the object to accelerate. Unbalanced forces
Describes how an object moves when the net force acting on it is zero. The object remains at rest,or if the object is already moving,continues to move in a straight line with constant speed. Newton's first law of motion
The force that brings nearly everything to a stop. Friction
The change in velocity divided by the time over which the change occured. Acceleration
Connects force,acceleration,and mass. Newton's second law of motion
The gravitational force on any object near Earth's surface. Weight
The point in an object that moves as if all the object's mass were concentrated at that point. Center of mass
Forces always act in an equal but opposite pairs. Newton's third law of motion
Created by: kmangu8393