Write the equation relating force momentum and time ?

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?

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.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car