(science) match each word with its example

words examples (also examples)
-speed -speed+direction -15.4 cm/sec
-acceleration -15 miles in 2 hours -55 mph north
-velocity -slowing down -284 cm per sec sw
-speeding up -65mph
-12 meters per second

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.

Carbon 14 is a naturally occurring stable

Positrons are spontaneously emitted from the nuclei of