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Forces
science words about forces
Question | Answer |
---|---|
Balanced Forces | Two or more forces whose effects cancel each other out and do not change the motion of an object |
center of mass | point in a object that moves as if all of the object's mass were concentrated at that point |
Force | a push or pull |
Friction | force that acts to oppose sliding between two surfaces that are touching |
Net Force | combination of all forces acting on an object |
Newton's 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 straight line with a constant speed |
Newton's second law of motion | states that an object acted upon by a net force will accelerate in the direction of the force and that the acceleration equals the net force divided by the objects mass |
Unbalanced Forces | two or more forces acting on an object that do not cancel and cause the object to accelerate |
Weight | gravitational force between an object and Earth |
Newton's third law of motion | states that forces always act in equal but opposite pairs |