PLEASE HELP 20 POINTS THIS IS DUE IN 5 MINUTES.

sorry for the bad quality but please don’t troll I really need help with this and please help me with my other problem as well it’s 20 points and explain

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.