Identify which collision are elastic (there is more than on choice below.
A car collision where two car stick together.
Two bowling balls collide of equal mass.
A steel cube sliding on a friction-less surface collide with another steel cube twice it's size and kinetic energy is not lost.
Ball of sticky tape hitting a billiard ball.
The elastic collisions among the given options are:
Two bowling balls collide of equal mass.
A steel cube sliding on a friction-less surface collide with another steel cube twice its size, and kinetic energy is not lost.