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kepler’s first law: law of orbits
all planets move around the sun in elliptical orbits
perihelion
closest to the sun and moving faster
aphelion
farthest from the sun and moving slower
kepler’s 2nd law: law of areas
the line joining the sun to a planet sweeps out equal area in equal times
kepler’s 3rd law
the square of the orbital period is proportional to the cube of the orbital radius
kappa(kepler’s constant) = r³/T²
periodicity
the time required for an object to complete a single cycle of motion (T)
frequency
(1/T) the number of occurences of a cycle of motion in a specified time interval
unit: [Hz] or [revolutions/time]
L
linear displacement
theta
angular displacement
in angular motion…
there are actually two accelerations which act on an object
tangential acceleration
perpendicular acceleration
when an object has only centripetal acceleration, but not tangential acceleration, the object is said to be undergoing…
UCM - uniform circular motion
non uniform circular motion
more than one acceleration and changing speed
Fc = mac
requirement for an object to be in circular motion
linear velocity is always..
tangential
Note 
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