a rabbit and fox ran a race. they started in the same direction, from the same place. the rabbit accelerated 5m/s2 to its maximum speed. ran at this speed for 4s. fox accelerated 2m/s2 for 8s. who was ahead at the end of the 8s and by how much?

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?