Car B is initially stationary and is struck by car A moving with initial speed v1 = 20 m...

Car B is initially stationary and is struck by car A moving with initial speed v₁ = 20 mi/hr. The cars become entangled and move together with speed after the collision. If the time duration of the collision is 0.1 sec, determine (a) the common final speed (b) the average acceleration of each car during the collision, and (c) the magnitude R of the average force exerted by each car on the other car during the impact. All brakes are released during the collision.