During a crash test, a car moving at 60 km/ hr collides with a rigid barrier and comes to a complete stop in 200 ms . The collision force as a function of time is given by F=at^{4} +bt^{3} +ct^{2} +dt, where a = -8.86 GN/ s^4 , b = 3.27 GN}/ s^3 , -360MN/ s^2 , and 12.7MN/s.
A) Find the total impulse imparted by the collision.
B) Find the average collisional force.
C) Find the car's mass.