A 0.1kg piece of modeling clay is tossed at 4 m/s. It hits a 0.1kg block of wood that is not moving and the clay sticks to the wood. After the collision, they slide together at 2 m/s. What is the impulse on the modeling clay?

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?