Questions of 8 Page 5 of 8 Determine the parts of the expression Sm+ 2+ 3 by matching
Con
S-3 is the
variable
expression
e coefficient
o constant
the expression Sm++-3
8 and 2 both
represent
numbers in the expression
Sm and 2
represent
terms in the expression

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)