[Einstein Uae]

Question 1

part a ) use this two equations to find the acceleration

vf= vi + a*t

x= 0.5*a*t^2 + vi*t

You have two equations in two unknowns, a and t. Find a .

part b ) use this equation first to find the acceleration

vf^2 = vi^2 + 2ax

then after finding a use this equation to find the net force in car which is basicly the weight of it. there is no friction because the car has stopped after collision so don't worry about the frictional force.