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CH.26 Vocab
| Question | Answer |
|---|---|
| Velocity | the speed and direction of a moving object |
| Force | a push or a pull |
| Net Force | combination of all forces acting on an object |
| Balanced Forces | Two or more forces whose effects cancel each other out and do not change the motion of an object. |
| Unbalanced Forces | two or more forces acting on an object that don't cancel, and cause the object to accelerate. |
| Newtons First Law of Motion | states that if the net force acting on an object is zero, the object will remain at rest or move in a strait line with a constant speed |
| Friction | force that acts to oppose sliding between two surfaces that are touching. |
| Acceleration | the change in velocity divided by the time over which the change occurred. |
| Weight | a measurement of force that depends on gravity measures in newtons. |
| Newton's second law of motion | states that an object acted upon by a net force will accelerate in the direction of the force will accelerate equal the net force divided by the object's mass. |
| Center of mass | point in a object that moves as if all of the object's mass were concentrated in that point. |
| Newtons third law of motion | states that forces always act in equal but opposite pairs. |
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