Airbags and safety belts can reduce injuries because they can A. increase the momentum after collision
B. increase the time of collision
C. reduce the velocity of collision
D. reduce the inertia

and why? ​

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

What is the most useful equation for electric power?

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?