A 256 g cart moves on a horizontal, frictionless surface with a constant speed of 18.1 cm/s.
A 34.4 g piece of modeling clay is dropped
vertically onto the cart.
If the clay sticks to the cart, find the final
speed of the system.
Answer in units of cm/s.

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?