Two cars are involved in a crash (no one was hurt in the accident). If the total momentum is 4120 kg. m/s after the collision, what is the
total momentum before the collision?

A. 0 kg • m/s
B. 8240 kg • m/s
C. 2060 kg • m/s
D. 4120 kg • m/s

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Which of the following is not am example of a polymer? protein nylon kevlar concreta

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.