A speed camera takes two photographs of a car. Photo 1
0.8m
Photo 2
0.8m
Photo 2 was taken 0.5 seconds after Photo 1.
Marks on the road are 0.8 metres apart.
Calculate the average speed of the car in m/s.

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

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)

In the diagram of circle o, what is the measure of zabc?