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Forces Intro

REview of forces

QuestionAnswer
force anything that can cause object to accelerate
speed up, slow down, or change direction 3 ways to accelerate
1st law of motion "an object in motion tends to stay in motion, until acted on by a net force"
2nd law of motion Force = mass x acceleration
3rd law of motion "for every force there is an equal and opposite force"
inertia tendency of object to continue its motion ; resist a change in motion
contact force force that must touch object to act on it
friction, tension, spring (examples of...) examples of contact forces
field force force that acts from a distance; does not have to touch object it acts on
gravity, magnetic, electric (examples of...) examples of field forces
Newtons (N) SI unit for force and Weight
balanced forces these forces cause no change to object's motion
Normal force perpendicular contact force that is upward if object is on a horizontal surface
Tension force upward force if object it suspended by a string
friction force that always moves in the opposite direction as object's motion
net force sum of all of the forces acting on an object
Free Body Diagram illustration of all the forces acting on an object
Air resistance upward force if object is falling through the air
static friction friction that acts on stationary objects
kinetic friction friction that acts on moving objects
Created by: cadetjt
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