A car accelerates from 10 m/s to 22 m/s in 6 seconds. What is the car’s average acceleration? A. -2 m/s2
B. 12 m/s2
C. -12 m/s2
D. 2 m/s2

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.