Question

892-kg sports car is moving 14.6 m/s when it rear ends with stopped car having an identical mass at a stop light. Two cars entangle and move together after the collision. What is their speed immediately after the collision

Answer 1

The speed of the cars immediately after the collision will be the same as their speed before the collision, which is 14.6 m/s. In a perfectly inelastic collision, the objects involved in the collision will move together with the same speed after the collision as they had before the collision. This is because the total kinetic energy of the system is conserved in a perfectly inelastic collision.