NEWTON'S FIRST LAW
States that an object at rest will remain at rest, and a moving object will continue moving in a straight line with a constant speed, if and only if the net force acting on that object is zero.
The condition in which the net force on an object is zero.
The force exerted by a fluid on an object moving through the fluid; depends on the object's motion and properties.
An object's apparent weight of zero that results when there are no contact forces pushing up on the object. ( no upward acting on it)
FREE BODY DIAGRAM
A physical model that represents the forces acting on a system.
A pair of forces that are equal in strength, but opposite in direction.
The specific name for a force exerted by a rope or string.
NEWTON'S THIRD LAW
States that all forces come in pairs and that the two forces in a pair act on different objects and are equal in strength and opposite in direction.
The force experienced by an object, resulting from all the forces acting on it, giving the object an acceleration.
The perpendicular contact force exerted by a surface on another object. (something "sitting" on something else)
The constant velocity of an object that is reached when the drag force equals the force of gravity.
A push or pull exerted on an object that causes a change in motion; has both direction and magnitude and may be a contact or a field force.
The vector sum of all the forces on an object.
The tendency of an object to resist change.