The combination of all forces acting on an object.
Net Force
Two or more forces exerted on an object and their effects cancel each other out and they do not change the object's velocity. The net force IS zero
Balanced forces
Two or more forces exerted on an object and their effects of the forces don't cancel, and the object's velocity changes. The net force is NOT zero.
Unbalanced Forces
According to ______________ if the net force acting on an object 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 acts to resist sliding between to touching surfaces. This force brings nearly everything to a stop.
Friciton
According to _____________ the acceleration of an object equals the net force divided by the mass and is in the direction of the net force.
acceleration(in m/s^2)= net force(in newtons) divided by mass(in kilograms)
Newton's second law of motion.
The measurement of the gravitational force exerted on an object. It is calculated from this equation: w=m(9.8 ms/s^2) (the ^ is the power of or "squared")
Weight
According to _______ forces always act in equal but opposite pairs. (for every action, there is an equal and opposite reaction)