SI units - ✔✔ - meter
-kilogram
-second
-ampere
-mole
-kelvin
-candela
vectors - ✔✔ - physicals quantities that have both magnitude
... [Show More] and direction
vector examples - ✔✔ velocity
displacement
acceleration
force
Scalars - ✔✔ quantities without direction
vector addition methods - ✔✔ tip to tail
- pythagorean theorum
vector subtraction - ✔✔ change direction of subtracted vector then follow procedure for vector addition
watts - ✔✔ (kg*m^2)/s^3
joules - ✔✔ (kg*m^2)/s^2
newtons - ✔✔ (kg*m)/s^2
multiplying a vector by a scalar - ✔✔ - changes the magnitude and may reverse direction
multiplying two vectors using dot product - ✔✔ - results in scalar quantity
- dot product is product of the vector's magnitudes and the cosine of the angle between them
multiplying two vectors using cross product - ✔✔ - results in vector quantity
- the products of the vectors' magnitudes and the sine of the angle between them
- right hang rule used to determine direction
displacement - ✔✔ - the vector representation of a change in position
- path is independent and is equivalent to the straight line distance between the start and the end locations
distance - ✔✔ scalar quantity that represents path traveled
velocity - ✔✔ vector representation of the change in displacement with respect to time
force - ✔✔ any push or pull that has potential to result in an acceleration
gravity - ✔✔ the attractive force between two objects as a result of their masses
friction - ✔✔ the force that opposes motion as a function of electrostatic interactions at the surface between two objects
static friction - ✔✔ exists between two objects that are not in motion relative to each other
kinematic friction - ✔✔ exists between two objects that are in motion relative to each other
-constant value
mass - ✔✔ a measure of the inertia of an object--its amount of material
weight - ✔✔ the force experienced by a given mass due to the gravitational attraction to earth
acceleration - ✔✔ the vector representation of the change in velocity over time
Newton's first law (inertia) - ✔✔ an object will remain at rest or move with a constant velocity if there is no net force on the object
Newton's second law - ✔✔ any acceleration is the result of the sum of the forces acting on the object and its mass
Newton's third law - ✔✔ any two objects interaction with one another experience equal and opposite forces as a result of their interaction
linear motion - ✔✔ - includes free fall
- includes motion in which the velocity and acceleration vectors are parallel or antiparallel
projectile motion - ✔✔ - contains both an x- and y- component
- assuming negligible air resistance, the onle force acting on the object is gravity
inclined planes - ✔✔ - example of two-dimensional movement
- often easiest to consider dimensions parallel and perpendicular to the surface of the plane
circular motion - ✔✔ - has radial and tangential dimensions
- in uniform motion, the only force is centripetal force, pointing radially inward
- instantaneous velocity vector always points tangentially
free body diagrams - ✔✔ representation of the forces acting on an object
- useful for equilibrium and dynamics problems
translational equilibrium - ✔✔ - occurs in the absence of any net forces acting on an object
- an object in this has a constant velocity and may or may not be in rotational equilibrium [Show Less]