Complete the calculation and statement about the radian measure of angle & as well as the arc that subtends t both shown on the unit circle above.
Arc Length =
II
units
The radian measure of an angle is equal to the length
of the corresponding are on the unit circe. Therefore,
angle 8 has a measure of radians
1
7

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 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)