30 an object starts from rest and slides with
negligible friction down an air track tipped at an
angle from the horizontal. a student records
values of the object's position along the track at
various times. the value of @ can best be
determined from which of the following?
(a) the intercept of a graph of position as
a function of time
(b) the intercept of a graph of position as
a function of the square of time
(c) the slope of a graph of position as a function
of time
(d) the slope of a graph of position as a function
of the square of time