Physics Car vs. Truck?

Question

suppose that each vehicle is initially moving at 8.40 m/s and that they undergo a perfectly inelastic head-on collision. Each driver has mass 80.0 kg. Including the masses of the drivers, the total masses of the vehicles are 800 kg for the car and 4000 kg for the truck. If the collision time is 0.120 s, what force does the seat belt exert on each driver?

Answer 1

dunno