Amotorcyclist sees a branch in the road,
and hits the brakes, slowing down at
-6.42 m/s2. if it takes him 2.85 s to stop,
what was his starting velocity?
(unit = m/s)

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.