The parking brake on a 1000 kg Cadillac has failed, and it is rolling slowly at 1.00 mph, towards a group of small children. Seeing the situation you realize you have just enough time to drive your 2000 kg Volkswagon head on into the Cdillac and save the children. With what speed should you impact the Cadillac to bring it to a halt?

Which statement correctly describes the relationship between frequency and wavelength?

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.

Need this now! do pilots live long