A large body collides with a stationary small body from the rear end. How do the bodies behave if the collision is inelastic?

the bodies collide and then separate
the bodies stick and move together
the large body stops, and the smaller body starts moving
the small boy will not move
the large body will start moving in the opposite direction

- Elastic collision: during an elastic collision, both total momentum and total kinetic energy of the objects involved is conserved. As a result, the different objects involved in the collision do not stick together, and they continue moving separately with different velocities

- Inelastic collision: during an inelastic collision, only the total momentum is conserved, while the total kinetic energy is not conserved. As a result, the two objects involved in the collision stick and move together after the collision: because of this, part of the total kinetic energy is wasted (generally converted into heat, because of the frictions between the objects).

Based on these definitions, the correct option is

the bodies stick and move together