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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|