click below
click below
Normal Size Small Size show me how
Unit 3 Chapter 16
Force and Newton's Laws
Definition | Term |
---|---|
The speed and direction of a moving object. | Velocity |
A push or a pull. | Force |
The combination of all forces acting on an object. | Net force |
Two or more forces whose effects cancel each other out and do not change the motion of an object. | Balanced forces |
Two or more forces acting on an object that do not cancel, and cause the object to accelerate. | Unbalanced forces |
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 first law of motion |
A force that acts to oppose sliding between two surfaces that are touching. | Friction |
The change in velocity divided by the time over which the change occurred. | Acceleration |
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 object's mass. | Newton's second law of motion |
A measurement of force that depends on gravity. | Weight |
Point in an object that moves as if all of the object's mass were concentrated at that point. | Center of mass |
Forces always act in equal but opposite pairs. | Newton's third law of motion |