Solve the all parts of given question:
Question: A 2000-kg truck is sitting at rest (in neutral) when it is rear-ended by a 1000-kg car going 20m/s .After the collision, the two vehicles stick together.
Part A: What is the final speed of the car-truck combination?
Part B: What is the kinetic energy of the two-vehicle system before the collision?
Part C: What is the kinetic energy of the system after the collision?
Part D: Based on the results of the previous parts, what can you conclude about which type of collision this is?
Part E: Calculate the coefficient of restitution for this collision.
I want help to determine the final speed of the car-truck combination.